diff --git a/include/lrglobal.cpp b/include/lrglobal.cpp
index 47b31f0..5b2cdff 100644
--- a/include/lrglobal.cpp
+++ b/include/lrglobal.cpp
@@ -51,4 +51,20 @@ void ReportSettings::setSuppressAbsentFieldsAndVarsWarnings(bool suppressAbsentF
     m_suppressAbsentFieldsAndVarsWarnings = suppressAbsentFieldsAndVarsWarnings;
 }
 
+QString escapeSimbols(const QString &value)
+{
+    QString result = value;
+    result.replace("\"","\\\"");
+    result.replace('\n',"\\n");
+    return result;
+}
+
+QString replaceHTMLSymbols(const QString &value)
+{
+    QString result = value;
+    result.replace("<","&lt;");
+    result.replace(">","&gt;");
+    return result;
+}
+
 } //namespace LimeReport
diff --git a/include/lrglobal.h b/include/lrglobal.h
index 3a01927..3b8aa7d 100644
--- a/include/lrglobal.h
+++ b/include/lrglobal.h
@@ -82,16 +82,21 @@ namespace Const{
     //const int DATASOURCE_INDEX = 6;
     //const int VALUE_INDEX = 2;
 
-    const QString GROUP_FUNCTION_PARAM_RX = "\\(\\s*(?:(?:((?:(?:\\\"?\\$D\\s*\\{\\s*)|(?:\\\"?\\$V\\s*\\{\\s*)|(?:\\\"))((?:\\w+\\.?\\w+)|(?:\\w+))(?:(?:\\\")|(?:\\s*\\}\\\"?\\s*)))\\s*,)|(?:))\\s*\\\"(\\w+)\\\"\\s*\\)";
-    const int DATASOURCE_INDEX = 4;
-    const int VALUE_INDEX = 2;
-    const int EXPRESSION_ARGUMENT_INDEX = 3;
+    //const QString GROUP_FUNCTION_PARAM_RX = "\\(\\s*(?:(?:((?:(?:\\\"?\\$D\\s*\\{\\s*)|(?:\\\"?\\$V\\s*\\{\\s*)|(?:\\\"?\\$S\\s*\\{\\s*)|(?:\\\"))((?:\\w+\\.?\\w+)|(?:\\w+))(?:(?:\\\")|(?:\\s*\\}\\\"?\\s*)))\\s*,)|(?:))\\s*\\\"(\\w+)\\\"\\s*\\)";
+    const QString GROUP_FUNCTION_PARAM_RX = "\\((?:(.+),|(?:))(?:\\\"(\\w+)\\\")\\)";
+    const int DATASOURCE_INDEX = 3;//4;
+    const int VALUE_INDEX = 2; //2;
+    const int EXPRESSION_ARGUMENT_INDEX = 1;//3;
 
     const QString GROUP_FUNCTION_RX = "(%1\\s*"+GROUP_FUNCTION_PARAM_RX+")";
     const QString GROUP_FUNCTION_NAME_RX = "%1\\s*\\((.*[^\\)])\\)";
     const int SCENE_MARGIN = 50;
 }
     QString extractClassName(QString className);
+    QString escapeSimbols(const QString& value);
+    QString replaceHTMLSymbols(const QString &value);
+
+    enum ExpandType {EscapeSymbols, NoEscapeSymbols, ReplaceHTMLSymbols};
     enum RenderPass {FirstPass, SecondPass};
     enum ArrangeType {AsNeeded, Force};
     enum PreviewHint{ShowAllPreviewBars = 0,
@@ -100,6 +105,7 @@ namespace Const{
                      HidePreviewStatusBar = 4,
                      HideAllPreviewBar = 7,
                      PreviewBarsUserSetting = 8};
+
     Q_DECLARE_FLAGS(PreviewHints, PreviewHint)
     Q_FLAGS(PreviewHints)
 
diff --git a/limereport/lrbasedesignintf.cpp b/limereport/lrbasedesignintf.cpp
index 77967f4..f0f7e2b 100644
--- a/limereport/lrbasedesignintf.cpp
+++ b/limereport/lrbasedesignintf.cpp
@@ -34,7 +34,6 @@
 #include "lrreportdesignwidget.h"
 #include "qgraphicsitem.h"
 #include "lrdesignelementsfactory.h"
-
 #include "lrhorizontallayout.h"
 
 #include <memory>
@@ -241,150 +240,29 @@ QFont BaseDesignIntf::transformToSceneFont(const QFont& value) const
     return f;
 }
 
-QString BaseDesignIntf::escapeSimbols(const QString &value)
-{
-    QString result = value;
-    result.replace("\"","\\\"");
-    result.replace('\n',"\\n");
-    return result;
-}
-
-QString BaseDesignIntf::replaceHTMLSymbols(const QString &value)
-{
-    QString result = value;
-    result.replace("<","&lt;");
-    result.replace(">","&gt;");
-    return result;
-}
-
 QString BaseDesignIntf::expandDataFields(QString context, ExpandType expandType, DataSourceManager* dataManager)
 {
-    QRegExp rx(Const::FIELD_RX);
-
-    if (context.contains(rx)){
-        while ((rx.indexIn(context))!=-1){
-            QString field=rx.cap(1);
-
-            if (dataManager->containsField(field)) {
-                QString fieldValue;
-                m_varValue = dataManager->fieldData(field);
-                if (expandType == EscapeSymbols) {
-                    if (dataManager->fieldData(field).isNull()) {
-                        fieldValue="\"\"";
-                    } else {
-                        fieldValue = escapeSimbols(m_varValue.toString());
-                        switch (dataManager->fieldData(field).type()) {
-                        case QVariant::Char:
-                        case QVariant::String:
-                        case QVariant::StringList:
-                        case QVariant::Date:
-                        case QVariant::DateTime:
-                            fieldValue = "\""+fieldValue+"\"";
-                            break;
-                        default:
-                            break;
-                        }
-                    }
-                } else {
-                    if (expandType == ReplaceHTMLSymbols)
-                        fieldValue = replaceHTMLSymbols(m_varValue.toString());
-                    else fieldValue = m_varValue.toString();
-                }
-
-                context.replace(rx.cap(0),fieldValue);
-
-            } else {
-                QString error = QString("Field %1 not found in %2 !!! ").arg(field).arg(this->objectName());
-                dataManager->putError(error);
-                if (!reportSettings() || !reportSettings()->suppressAbsentFieldsAndVarsWarnings())
-                    context.replace(rx.cap(0),error);
-                else
-                    context.replace(rx.cap(0),"");
-            }
-        }
-    }
-
-    return context;
+    ScriptEngineManager& sm = ScriptEngineManager::instance();
+    if (sm.dataManager() != dataManager) sm.setDataManager(dataManager);
+    return sm.expandDataFields(context, expandType, m_varValue, this);
 }
 
 QString BaseDesignIntf::expandUserVariables(QString context, RenderPass pass, ExpandType expandType, DataSourceManager* dataManager)
 {
-    QRegExp rx(Const::VARIABLE_RX);
-    if (context.contains(rx)){
-        int pos = 0;
-        while ((pos = rx.indexIn(context,pos))!=-1){
-            QString variable=rx.cap(1);
-            pos += rx.matchedLength();
-            if (dataManager->containsVariable(variable) ){
-                try {
-                    if (pass==dataManager->variablePass(variable)){
-                        m_varValue = dataManager->variable(variable);
-                        switch (expandType){
-                        case EscapeSymbols:
-                            context.replace(rx.cap(0),escapeSimbols(m_varValue.toString()));
-                        break;
-                        case NoEscapeSymbols:
-                            context.replace(rx.cap(0),m_varValue.toString());
-                        break;
-                        case ReplaceHTMLSymbols:
-                            context.replace(rx.cap(0),replaceHTMLSymbols(m_varValue.toString()));
-                        break;
-                        }
-                        pos=0;
-                    }
-                } catch (ReportError e){
-                    dataManager->putError(e.what());
-                    if (!reportSettings() || reportSettings()->suppressAbsentFieldsAndVarsWarnings())
-                        context.replace(rx.cap(0),e.what());
-                    else
-                        context.replace(rx.cap(0),"");
-                }
-            } else {
-                QString error;
-                error = tr("Variable %1 not found").arg(variable);
-                dataManager->putError(error);
-                if (!reportSettings() || reportSettings()->suppressAbsentFieldsAndVarsWarnings())
-                    context.replace(rx.cap(0),error);
-                else
-                    context.replace(rx.cap(0),"");
-            }
-        }
-    }
-    return context;
+
+    ScriptEngineManager& sm = ScriptEngineManager::instance();
+    if (sm.dataManager() != dataManager) sm.setDataManager(dataManager);
+    return sm.expandUserVariables(context, pass, expandType, m_varValue);
+
 }
 
 QString BaseDesignIntf::expandScripts(QString context, DataSourceManager* dataManager)
 {
-    QRegExp rx(Const::SCRIPT_RX);
 
-    if (context.contains(rx)){
-        ScriptEngineManager::instance().setDataManager(dataManager);
-        QScriptEngine* se = ScriptEngineManager::instance().scriptEngine();
+    ScriptEngineManager& sm = ScriptEngineManager::instance();
+    if (sm.dataManager() != dataManager) sm.setDataManager(dataManager);
+    return sm.expandScripts(context,m_varValue,this);
 
-        QScriptValue svThis =  se->globalObject().property("THIS");
-        if (svThis.isValid()){
-            se->newQObject(svThis, this);
-        } else {
-            svThis = se->newQObject(this);
-            se->globalObject().setProperty("THIS",svThis);
-        }
-
-        ScriptExtractor scriptExtractor(context);
-        if (scriptExtractor.parse()){
-            for(int i=0; i<scriptExtractor.count();++i){
-                QString scriptBody = expandDataFields(scriptExtractor.bodyAt(i),EscapeSymbols, dataManager);
-                scriptBody = expandUserVariables(scriptBody, FirstPass, EscapeSymbols, dataManager);
-                QScriptValue value = se->evaluate(scriptBody);
-                if (!se->hasUncaughtException()) {
-                    m_varValue = value.toVariant();
-                    context.replace(scriptExtractor.scriptAt(i),value.toString());
-                } else {
-                    context.replace(scriptExtractor.scriptAt(i),se->uncaughtException().toString());
-                }
-            }
-        }
-    }
-    return context;
 }
 
 void BaseDesignIntf::setupPainter(QPainter *painter) const
diff --git a/limereport/lrbasedesignintf.h b/limereport/lrbasedesignintf.h
index d6b32f6..253da8d 100644
--- a/limereport/lrbasedesignintf.h
+++ b/limereport/lrbasedesignintf.h
@@ -131,7 +131,7 @@ public:
                     };
     enum ObjectState {ObjectLoading, ObjectLoaded, ObjectCreated};
     enum ItemAlign {LeftItemAlign,RightItemAlign,CenterItemAlign,ParentWidthItemAlign,DesignedItemAlign};
-    enum ExpandType {EscapeSymbols, NoEscapeSymbols, ReplaceHTMLSymbols};
+//    enum ExpandType {EscapeSymbols, NoEscapeSymbols, ReplaceHTMLSymbols};
     Q_DECLARE_FLAGS(BorderLines, BorderSide)
     Q_DECLARE_FLAGS(ItemMode,ItemModes)
     friend class SelectionMarker;
@@ -327,11 +327,9 @@ protected:
     virtual bool drawDesignBorders() const {return true;}
     virtual QColor selectionMarkerColor(){ return Const::SELECTION_COLOR;}
 
-    QString escapeSimbols(const QString& value);
-    QString replaceHTMLSymbols(const QString& value);
-    virtual QString expandUserVariables(QString context, RenderPass pass, ExpandType expandType, DataSourceManager *dataManager);
-    virtual QString expandDataFields(QString context, ExpandType expandType, DataSourceManager *dataManager);
-    virtual QString expandScripts(QString context, DataSourceManager *dataManager);
+    QString expandUserVariables(QString context, RenderPass pass, ExpandType expandType, DataSourceManager *dataManager);
+    QString expandDataFields(QString context, ExpandType expandType, DataSourceManager *dataManager);
+    QString expandScripts(QString context, DataSourceManager *dataManager);
 
     QVariant m_varValue;
 
diff --git a/limereport/lrdatasourcemanager.cpp b/limereport/lrdatasourcemanager.cpp
index 42ec024..bab241d 100644
--- a/limereport/lrdatasourcemanager.cpp
+++ b/limereport/lrdatasourcemanager.cpp
@@ -238,6 +238,29 @@ void DataSourceManager::setDefaultDatabasePath(const QString &defaultDatabasePat
 {
     m_defaultDatabasePath = defaultDatabasePath;
 }
+
+QString DataSourceManager::putGroupFunctionsExpressions(QString expression)
+{
+    if (m_groupFunctionsExpressionsMap.contains(expression)){
+        return QString::number(m_groupFunctionsExpressionsMap.value(expression));
+    } else {
+        m_groupFunctionsExpressions.append(expression);
+        m_groupFunctionsExpressionsMap.insert(expression, m_groupFunctionsExpressions.size()-1);
+        return QString::number(m_groupFunctionsExpressions.size()-1);
+    }
+}
+
+void DataSourceManager::clearGroupFuntionsExpressions()
+{
+    m_groupFunctionsExpressionsMap.clear();
+    m_groupFunctionsExpressions.clear();
+}
+
+QString DataSourceManager::getExpression(QString index)
+{
+   return m_groupFunctionsExpressions.at(index.toInt());
+}
+
 bool DataSourceManager::designTime() const
 {
     return m_designTime;
@@ -702,6 +725,16 @@ bool DataSourceManager::initAndOpenDB(QSqlDatabase& db, ConnectionDesc& connecti
     return  connected;
 }
 
+ReportSettings *DataSourceManager::reportSettings() const
+{
+    return m_reportSettings;
+}
+
+void DataSourceManager::setReportSettings(ReportSettings *reportSettings)
+{
+    m_reportSettings = reportSettings;
+}
+
 bool DataSourceManager::connectConnection(ConnectionDesc *connectionDesc)
 {
 
diff --git a/limereport/lrdatasourcemanager.h b/limereport/lrdatasourcemanager.h
index a6043f0..7670b2e 100644
--- a/limereport/lrdatasourcemanager.h
+++ b/limereport/lrdatasourcemanager.h
@@ -192,6 +192,13 @@ public:
     QString defaultDatabasePath() const;
     void setDefaultDatabasePath(const QString &defaultDatabasePath);
 
+    QString putGroupFunctionsExpressions(QString expression);
+    void    clearGroupFuntionsExpressions();
+    QString getExpression(QString index);
+
+    ReportSettings *reportSettings() const;
+    void setReportSettings(ReportSettings *reportSettings);
+
 signals:
     void loadCollectionFinished(const QString& collectionName);
     void cleared();
@@ -240,7 +247,13 @@ private:
     bool m_designTime;
     bool m_needUpdate;
     QString m_defaultDatabasePath;
+    ReportSettings* m_reportSettings;
+    QHash<QString,int> m_groupFunctionsExpressionsMap;
+    QVector<QString> m_groupFunctionsExpressions;
+
+
 };
 
 }
 #endif // LRDATASOURCEMANAGER_H
+
diff --git a/limereport/lrglobal.cpp b/limereport/lrglobal.cpp
index 47b31f0..5b2cdff 100644
--- a/limereport/lrglobal.cpp
+++ b/limereport/lrglobal.cpp
@@ -51,4 +51,20 @@ void ReportSettings::setSuppressAbsentFieldsAndVarsWarnings(bool suppressAbsentF
     m_suppressAbsentFieldsAndVarsWarnings = suppressAbsentFieldsAndVarsWarnings;
 }
 
+QString escapeSimbols(const QString &value)
+{
+    QString result = value;
+    result.replace("\"","\\\"");
+    result.replace('\n',"\\n");
+    return result;
+}
+
+QString replaceHTMLSymbols(const QString &value)
+{
+    QString result = value;
+    result.replace("<","&lt;");
+    result.replace(">","&gt;");
+    return result;
+}
+
 } //namespace LimeReport
diff --git a/limereport/lrglobal.h b/limereport/lrglobal.h
index 3a01927..3b8aa7d 100644
--- a/limereport/lrglobal.h
+++ b/limereport/lrglobal.h
@@ -82,16 +82,21 @@ namespace Const{
     //const int DATASOURCE_INDEX = 6;
     //const int VALUE_INDEX = 2;
 
-    const QString GROUP_FUNCTION_PARAM_RX = "\\(\\s*(?:(?:((?:(?:\\\"?\\$D\\s*\\{\\s*)|(?:\\\"?\\$V\\s*\\{\\s*)|(?:\\\"))((?:\\w+\\.?\\w+)|(?:\\w+))(?:(?:\\\")|(?:\\s*\\}\\\"?\\s*)))\\s*,)|(?:))\\s*\\\"(\\w+)\\\"\\s*\\)";
-    const int DATASOURCE_INDEX = 4;
-    const int VALUE_INDEX = 2;
-    const int EXPRESSION_ARGUMENT_INDEX = 3;
+    //const QString GROUP_FUNCTION_PARAM_RX = "\\(\\s*(?:(?:((?:(?:\\\"?\\$D\\s*\\{\\s*)|(?:\\\"?\\$V\\s*\\{\\s*)|(?:\\\"?\\$S\\s*\\{\\s*)|(?:\\\"))((?:\\w+\\.?\\w+)|(?:\\w+))(?:(?:\\\")|(?:\\s*\\}\\\"?\\s*)))\\s*,)|(?:))\\s*\\\"(\\w+)\\\"\\s*\\)";
+    const QString GROUP_FUNCTION_PARAM_RX = "\\((?:(.+),|(?:))(?:\\\"(\\w+)\\\")\\)";
+    const int DATASOURCE_INDEX = 3;//4;
+    const int VALUE_INDEX = 2; //2;
+    const int EXPRESSION_ARGUMENT_INDEX = 1;//3;
 
     const QString GROUP_FUNCTION_RX = "(%1\\s*"+GROUP_FUNCTION_PARAM_RX+")";
     const QString GROUP_FUNCTION_NAME_RX = "%1\\s*\\((.*[^\\)])\\)";
     const int SCENE_MARGIN = 50;
 }
     QString extractClassName(QString className);
+    QString escapeSimbols(const QString& value);
+    QString replaceHTMLSymbols(const QString &value);
+
+    enum ExpandType {EscapeSymbols, NoEscapeSymbols, ReplaceHTMLSymbols};
     enum RenderPass {FirstPass, SecondPass};
     enum ArrangeType {AsNeeded, Force};
     enum PreviewHint{ShowAllPreviewBars = 0,
@@ -100,6 +105,7 @@ namespace Const{
                      HidePreviewStatusBar = 4,
                      HideAllPreviewBar = 7,
                      PreviewBarsUserSetting = 8};
+
     Q_DECLARE_FLAGS(PreviewHints, PreviewHint)
     Q_FLAGS(PreviewHints)
 
diff --git a/limereport/lrgroupfunctions.cpp b/limereport/lrgroupfunctions.cpp
index d21b4f8..c265dfc 100644
--- a/limereport/lrgroupfunctions.cpp
+++ b/limereport/lrgroupfunctions.cpp
@@ -31,6 +31,7 @@
 #include "lrdatasourcemanager.h"
 #include "lrbanddesignintf.h"
 #include "lritemdesignintf.h"
+#include "lrscriptenginemanager.h"
 
 #include <QRegExp>
 
@@ -38,23 +39,45 @@ namespace LimeReport {
 
 void GroupFunction::slotBandRendered(BandDesignIntf *band)
 {
+    ScriptEngineManager& sm = ScriptEngineManager::instance();
+
+    QRegExp rxField(Const::FIELD_RX);
+    QRegExp rxVar(Const::VARIABLE_RX);
+
     switch (m_dataType){
     case Field:
-        if (m_dataManager->containsField(m_data)){
-            m_values.push_back(m_dataManager->fieldData(m_data));
-        } else {
-            setInvalid(tr("Field \"%1\" not found").arg(m_data));
+        if (rxField.indexIn(m_data) != -1){
+            QString field = rxField.cap(1);
+            if (m_dataManager->containsField(field)){
+                m_values.push_back(m_dataManager->fieldData(field));
+            } else {
+                setInvalid(tr("Field \"%1\" not found").arg(m_data));
+            }
         }
         break;
     case Variable:
-        if (m_dataManager->containsVariable(m_data)){
-            m_values.push_back(m_dataManager->variable(m_data));
-        } else {
-            setInvalid(tr("Variable \"%1\" not found").arg(m_data));
+        if (rxVar.indexIn(m_data) != -1){
+            QString var = rxVar.cap(1);
+            if (m_dataManager->containsVariable(var)){
+                m_values.push_back(m_dataManager->variable(var));
+            } else {
+                setInvalid(tr("Variable \"%1\" not found").arg(m_data));
+            }
         }
         break;
+    case Script:
+    {
+        QVariant value = sm.evaluateScript(m_data);
+        if (value.isValid()){
+            m_values.push_back(value);
+        } else {
+            setInvalid(tr("Wrong script syntax \"%1\" ").arg(m_data));
+        }
+        break;
+    }
     case ContentItem:{
-        ContentItemDesignIntf* item = dynamic_cast<ContentItemDesignIntf*>(band->childByName(m_data));
+        QString itemName = m_data;
+        ContentItemDesignIntf* item = dynamic_cast<ContentItemDesignIntf*>(band->childByName(itemName.remove('"')));
         if (item)
             m_values.push_back(item->content());
         else if (m_name.compare("COUNT",Qt::CaseInsensitive) == 0) {
@@ -91,24 +114,27 @@ QVariant GroupFunction::multiplication(QVariant value1, QVariant value2)
 GroupFunction::GroupFunction(const QString &expression, const QString &dataBandName, DataSourceManager* dataManager)
     :m_dataBandName(dataBandName), m_dataManager(dataManager),m_isValid(true), m_errorMessage("")
 {
+    m_data = expression;
     QRegExp rxField(Const::FIELD_RX,Qt::CaseInsensitive);
-    if (rxField.indexIn(expression)>=0){
-        m_dataType=Field;
-        m_data = rxField.cap(1);
+    QRegExp rxVariable(Const::VARIABLE_RX,Qt::CaseInsensitive);
+    QRegExp rxScript(Const::SCRIPT_RX,Qt::CaseInsensitive);
+
+    if (rxScript.indexIn(expression) != -1){
+        m_dataType = Script;
         return;
     }
 
-    QRegExp rxVariable(Const::VARIABLE_RX,Qt::CaseInsensitive);
-    if (rxVariable.indexIn(expression)>=0){
-        m_dataType=Variable;
-        m_data = rxVariable.cap(1);
+    if (rxField.indexIn(expression) != -1){
+        m_dataType=Field;
+        return;
+    }
+
+    if (rxVariable.indexIn(expression) != -1){
+        m_dataType = Variable;
         return;
     }
 
     m_dataType = ContentItem;
-    m_data = expression;
-    m_data = m_data.remove('"');
-
 }
 
 GroupFunction *GroupFunctionFactory::createGroupFunction(const QString &functionName, const QString &expression, const QString& dataBandName, DataSourceManager *dataManager)
diff --git a/limereport/lrgroupfunctions.h b/limereport/lrgroupfunctions.h
index cfe59c2..f85a0bd 100644
--- a/limereport/lrgroupfunctions.h
+++ b/limereport/lrgroupfunctions.h
@@ -42,7 +42,7 @@ class BandDesignIntf;
 class GroupFunction : public QObject{
     Q_OBJECT
 public:
-    enum DataType{Variable,Field,Srcipt,ContentItem};
+    enum DataType{Variable, Field, Script, ContentItem};
     GroupFunction(const QString& expression, const QString& dataBandName, DataSourceManager *dataManager);
     bool isValid(){return m_isValid;}
     void setInvalid(QString message){m_isValid=false,m_errorMessage=message;}
diff --git a/limereport/lrreportengine.cpp b/limereport/lrreportengine.cpp
index 62d75bb..edb7ac4 100644
--- a/limereport/lrreportengine.cpp
+++ b/limereport/lrreportengine.cpp
@@ -60,7 +60,8 @@ ReportEnginePrivate::ReportEnginePrivate(QObject *parent) :
     m_showProgressDialog(true), m_reportName(""), m_activePreview(0),
     m_previewWindowIcon(":/report/images/logo32"), m_previewWindowTitle(tr("Preview")), m_reportRendering(false)
 {
-    m_datasources= new DataSourceManager(this);
+    m_datasources = new DataSourceManager(this);
+    m_datasources->setReportSettings(&m_reportSettings);
     m_scriptEngineContext = new ScriptEngineContext(this);
     m_datasources->setObjectName("datasources");
     connect(m_datasources,SIGNAL(loadCollectionFinished(QString)),this,SLOT(slotDataSourceCollectionLoaded(QString)));
diff --git a/limereport/lrreportrender.cpp b/limereport/lrreportrender.cpp
index 2b061d8..a66b95d 100644
--- a/limereport/lrreportrender.cpp
+++ b/limereport/lrreportrender.cpp
@@ -236,6 +236,7 @@ void ReportRender::renderPage(PageDesignIntf* patternPage)
 
         try{
             datasources()->setAllDatasourcesToFirst();
+            datasources()->clearGroupFuntionsExpressions();
         } catch(ReportError &exception){
             //TODO possible should thow exeption
             QMessageBox::critical(0,tr("Error"),exception.what());
@@ -277,7 +278,7 @@ int ReportRender::pageCount()
 
 PageItemDesignIntf::Ptr ReportRender::pageAt(int index)
 {
-    if ((index>m_renderedPages.count()-1)||(index<0)) throw ReportError("page index out of range");
+    if ((index>m_renderedPages.count()-1)||(index<0)) throw ReportError(tr("page index out of range"));
     else return m_renderedPages.at(index);
 }
 
@@ -368,7 +369,8 @@ void ReportRender::replaceGroupsFunction(BandDesignIntf *band)
                 if (rx.indexIn(content)>=0){
                     int pos = 0;
                     while ( (pos = rx.indexIn(content,pos))!= -1 ){
-                        content.replace(rx.capturedTexts().at(0),QString("%1(%2,%3)").arg(functionName).arg('"'+rx.cap(Const::EXPRESSION_ARGUMENT_INDEX)+'"').arg('"'+band->objectName()+'"'));
+                        QString expressionIndex = datasources()->putGroupFunctionsExpressions(rx.cap(Const::VALUE_INDEX));
+                        content.replace(rx.capturedTexts().at(0),QString("%1(%2,%3)").arg(functionName).arg('"'+expressionIndex+'"').arg('"'+band->objectName()+'"'));
                         pos += rx.matchedLength();
                     }
                     contentItem->setContent(content);
diff --git a/limereport/lrscriptenginemanager.cpp b/limereport/lrscriptenginemanager.cpp
index aeca592..f69283b 100644
--- a/limereport/lrscriptenginemanager.cpp
+++ b/limereport/lrscriptenginemanager.cpp
@@ -309,7 +309,7 @@ QScriptValue callGroupFunction(const QString& functionName, QScriptContext* pcon
         expression = " ";
         band = pcontext->argument(0).toString();
     } else {
-        expression = pcontext->argument(0).toString();
+        expression = dm->getExpression(pcontext->argument(0).toString());
         band = pcontext->argument(1).toString();
     }
 
@@ -427,7 +427,7 @@ void ScriptEngineManager::setDataManager(DataSourceManager *dataManager){
         if (m_dataManager){
             foreach(QString func, m_dataManager->groupFunctionNames()){
                 if (isFunctionExists(func)) deleteFunction(func);
-                addFunction(func, groupFunction,"GROUP FUNCTIONS", func+"(\""+tr("FieldName")+"\",\""+tr("BandName")+"\")");
+                addFunction(func, groupFunction,"GROUP FUNCTIONS", func+"(\""+tr("Value")+"\",\""+tr("BandName")+"\")");
             }
             foreach(ScriptFunctionDesc func, m_functions){
                 if (func.type==ScriptFunctionDesc::Native)
@@ -437,6 +437,167 @@ void ScriptEngineManager::setDataManager(DataSourceManager *dataManager){
     }
 }
 
+QString ScriptEngineManager::expandUserVariables(QString context, RenderPass pass, ExpandType expandType, QVariant &varValue)
+{
+    QRegExp rx(Const::VARIABLE_RX);
+    if (context.contains(rx)){
+        int pos = 0;
+        while ((pos = rx.indexIn(context,pos))!=-1){
+            QString variable=rx.cap(1);
+            pos += rx.matchedLength();
+            if (dataManager()->containsVariable(variable) ){
+                try {
+                    if (pass==dataManager()->variablePass(variable)){
+                        varValue = dataManager()->variable(variable);
+                        switch (expandType){
+                        case EscapeSymbols:
+                            context.replace(rx.cap(0),escapeSimbols(varValue.toString()));
+                        break;
+                        case NoEscapeSymbols:
+                            context.replace(rx.cap(0),varValue.toString());
+                        break;
+                        case ReplaceHTMLSymbols:
+                            context.replace(rx.cap(0),replaceHTMLSymbols(varValue.toString()));
+                        break;
+                        }
+                        pos=0;
+                    }
+                } catch (ReportError e){
+                    dataManager()->putError(e.what());
+                    if (!dataManager()->reportSettings() || dataManager()->reportSettings()->suppressAbsentFieldsAndVarsWarnings())
+                        context.replace(rx.cap(0),e.what());
+                    else
+                        context.replace(rx.cap(0),"");
+                }
+            } else {
+                QString error;
+                error = tr("Variable %1 not found").arg(variable);
+                dataManager()->putError(error);
+                if (!dataManager()->reportSettings() || dataManager()->reportSettings()->suppressAbsentFieldsAndVarsWarnings())
+                    context.replace(rx.cap(0),error);
+                else
+                    context.replace(rx.cap(0),"");
+            }
+        }
+    }
+    return context;
+}
+
+QString ScriptEngineManager::expandDataFields(QString context, ExpandType expandType, QVariant &varValue, QObject *reportItem)
+{
+    QRegExp rx(Const::FIELD_RX);
+
+    if (context.contains(rx)){
+        while ((rx.indexIn(context))!=-1){
+            QString field=rx.cap(1);
+
+            if (dataManager()->containsField(field)) {
+                QString fieldValue;
+                varValue = dataManager()->fieldData(field);
+                if (expandType == EscapeSymbols) {
+                    if (dataManager()->fieldData(field).isNull()) {
+                        fieldValue="\"\"";
+                    } else {
+                        fieldValue = escapeSimbols(varValue.toString());
+                        switch (dataManager()->fieldData(field).type()) {
+                        case QVariant::Char:
+                        case QVariant::String:
+                        case QVariant::StringList:
+                        case QVariant::Date:
+                        case QVariant::DateTime:
+                            fieldValue = "\""+fieldValue+"\"";
+                            break;
+                        default:
+                            break;
+                        }
+                    }
+                } else {
+                    if (expandType == ReplaceHTMLSymbols)
+                        fieldValue = replaceHTMLSymbols(varValue.toString());
+                    else fieldValue = varValue.toString();
+                }
+
+                context.replace(rx.cap(0),fieldValue);
+
+            } else {
+                QString error = QString("Field %1 not found in %2 !!! ").arg(field).arg(reportItem->objectName());
+                dataManager()->putError(error);
+                varValue = QVariant();
+                if (!dataManager()->reportSettings() || !dataManager()->reportSettings()->suppressAbsentFieldsAndVarsWarnings())
+                    context.replace(rx.cap(0),error);
+                else
+                    context.replace(rx.cap(0),"");
+            }
+        }
+    }
+
+    return context;
+}
+
+QString ScriptEngineManager::expandScripts(QString context, QVariant& varValue, QObject *reportItem)
+{
+    QRegExp rx(Const::SCRIPT_RX);
+
+    if (context.contains(rx)){
+
+        if (ScriptEngineManager::instance().dataManager()!=dataManager())
+            ScriptEngineManager::instance().setDataManager(dataManager());
+
+        QScriptEngine* se = ScriptEngineManager::instance().scriptEngine();
+
+        if (reportItem){
+            QScriptValue svThis =  se->globalObject().property("THIS");
+            if (svThis.isValid()){
+                se->newQObject(svThis, this);
+            } else {
+                svThis = se->newQObject(this);
+                se->globalObject().setProperty("THIS",svThis);
+            }
+        }
+
+        ScriptExtractor scriptExtractor(context);
+        if (scriptExtractor.parse()){
+            for(int i=0; i<scriptExtractor.count();++i){
+                QString scriptBody = expandDataFields(scriptExtractor.bodyAt(i),EscapeSymbols, varValue, reportItem);
+                scriptBody = expandUserVariables(scriptBody, FirstPass, EscapeSymbols, varValue);
+                QScriptValue value = se->evaluate(scriptBody);
+                if (!se->hasUncaughtException()) {
+                    varValue = value.toVariant();
+                    context.replace(scriptExtractor.scriptAt(i),value.toString());
+                } else {
+                    context.replace(scriptExtractor.scriptAt(i),se->uncaughtException().toString());
+                }
+            }
+        }
+    }
+    return context;
+}
+
+QVariant ScriptEngineManager::evaluateScript(const QString& script){
+
+    QRegExp rx(Const::SCRIPT_RX);
+    QVariant varValue;
+
+    if (script.contains(rx)){
+
+        if (ScriptEngineManager::instance().dataManager()!=dataManager())
+            ScriptEngineManager::instance().setDataManager(dataManager());
+
+        QScriptEngine* se = ScriptEngineManager::instance().scriptEngine();
+
+        ScriptExtractor scriptExtractor(script);
+        if (scriptExtractor.parse()){
+            QString scriptBody = expandDataFields(scriptExtractor.bodyAt(0),EscapeSymbols, varValue, 0);
+            scriptBody = expandUserVariables(scriptBody, FirstPass, EscapeSymbols, varValue);
+            QScriptValue value = se->evaluate(scriptBody);
+            if (!se->hasUncaughtException()) {
+                return value.toVariant();
+            }
+        }
+    }
+    return QVariant();
+}
+
 void ScriptEngineManager::updateModel()
 {
 
diff --git a/limereport/lrscriptenginemanager.h b/limereport/lrscriptenginemanager.h
index 0c738d9..545580b 100644
--- a/limereport/lrscriptenginemanager.h
+++ b/limereport/lrscriptenginemanager.h
@@ -190,6 +190,11 @@ public:
     DataSourceManager* dataManager() const {return m_dataManager;}
     void setDataManager(DataSourceManager* dataManager);
 
+    QString expandUserVariables(QString context, RenderPass pass, ExpandType expandType, QVariant &varValue);
+    QString expandDataFields(QString context, ExpandType expandType, QVariant &varValue, QObject* reportItem);
+    QString expandScripts(QString context, QVariant &varValue, QObject* reportItem);
+    QVariant evaluateScript(const QString &script);
+
 protected:
     void updateModel();
     bool containsFunction(const QString &functionName);