diff --git a/include/lrdatasourcemanagerintf.h b/include/lrdatasourcemanagerintf.h
index c0b345e..f86e51e 100644
--- a/include/lrdatasourcemanagerintf.h
+++ b/include/lrdatasourcemanagerintf.h
@@ -31,6 +31,7 @@
 #define LRDATASOURCEMANAGERINTF_H
 
 #include "lrcallbackdatasourceintf.h"
+#include "lrglobal.h"
 
 class QVariant;
 class QString;
@@ -56,6 +57,11 @@ public:
     virtual void clearUserVariables()=0;
     virtual ICallbackDatasource* createCallbackDatasource(const QString& name) = 0;
     virtual void registerDbCredentialsProvider(IDbCredentialsProvider* provider) = 0;
+
+    virtual QStringList variableNames() = 0;
+    virtual bool variableIsMandatory(const QString& name) = 0;
+    virtual VariableDataType variableDataType(const QString& name) = 0;
+    virtual bool variableIsSystem(const QString& name) = 0;
 };
 
 }
diff --git a/include/lrglobal.h b/include/lrglobal.h
index a8ed17d..77156d3 100644
--- a/include/lrglobal.h
+++ b/include/lrglobal.h
@@ -157,6 +157,17 @@ namespace Const{
     typedef QScriptValue ScriptValueType;
 #endif
 
+    class Enums
+    {
+    public:
+        enum VariableDataType {Undefined, String, Bool, Int, Real, Date, Time, DateTime};
+        Q_ENUM(VariableDataType)
+    private:
+        Enums(){}
+        Q_GADGET
+    };
+    typedef Enums::VariableDataType VariableDataType;
+
 } // namespace LimeReport
 
 Q_DECLARE_OPERATORS_FOR_FLAGS(LimeReport::PreviewHints)
diff --git a/limereport/databrowser/lrdatabrowser.cpp b/limereport/databrowser/lrdatabrowser.cpp
index 0b4ac5a..79baae0 100644
--- a/limereport/databrowser/lrdatabrowser.cpp
+++ b/limereport/databrowser/lrdatabrowser.cpp
@@ -237,7 +237,7 @@ void DataBrowser::updateVariablesTree()
         }
     }
 
-    foreach(QString variableName,m_report->dataManager()->namesOfUserVariables()){
+    foreach(QString variableName,m_report->dataManager()->userVariableNames()){
         if (!m_report->dataManager()->variableNames().contains(variableName)){
             QStringList values;
             values<<variableName+"  ["+m_report->dataManager()->variable(variableName).toString()+"]"
diff --git a/limereport/databrowser/lrvariabledialog.cpp b/limereport/databrowser/lrvariabledialog.cpp
index 4cebd55..d5c34d9 100644
--- a/limereport/databrowser/lrvariabledialog.cpp
+++ b/limereport/databrowser/lrvariabledialog.cpp
@@ -30,8 +30,10 @@
 #include "lrvariabledialog.h"
 #include "ui_lrvariabledialog.h"
 #include "lrglobal.h"
+#include "lrvariablesholder.h"
 #include <stdexcept>
 #include <QMessageBox>
+#include <QMetaEnum>
 
 LRVariableDialog::LRVariableDialog(QWidget *parent) :
     QDialog(parent),
@@ -42,8 +44,14 @@ LRVariableDialog::LRVariableDialog(QWidget *parent) :
     m_oldVariableName("")
 {
     ui->setupUi(this);
-    ui->cbbType->setVisible(false);
-    ui->lblType->setVisible(false);
+
+    static int enumIndex = LimeReport::Enums::staticMetaObject.indexOfEnumerator("VariableDataType");
+    QMetaEnum enumerator = LimeReport::Enums::staticMetaObject.enumerator(enumIndex);
+    for (int i = 0; i<enumerator.keyCount(); ++i){
+        ui->cbbType->addItem(enumerator.key(i));
+    }
+    //ui->cbbType->setVisible(false);
+    //ui->lblType->setVisible(false);
 }
 
 LRVariableDialog::~LRVariableDialog()
@@ -66,28 +74,40 @@ void LRVariableDialog::setVariableName(const QString &value)
 void LRVariableDialog::showEvent(QShowEvent *)
 {
     ui->leName->setText(m_variableName);
-    if (!m_variableName.isEmpty()&&m_variablesContainer&&m_variablesContainer->containsVariable(m_variableName)){
+    static int enumIndex = LimeReport::Enums::staticMetaObject.indexOfEnumerator("VariableDataType");
+    QMetaEnum enumerator = LimeReport::Enums::staticMetaObject.enumerator(enumIndex);
+    if (!m_variableName.isEmpty()&&m_variablesContainer&&m_variablesContainer->containsVariable(m_variableName)){        
         ui->leValue->setText(m_variablesContainer->variable(m_variableName).toString());
+        ui->cbbType->setCurrentText(enumerator.valueToKey(m_variablesContainer->variableDataType(m_variableName)));
+        ui->cbbMandatory->setChecked(m_variablesContainer->variableIsMandatory(m_variableName));
     }
 }
 
 void LRVariableDialog::accept()
 {
     try{
-    if (m_variablesContainer&&!ui->leName->text().isEmpty()){
-        if (m_changeMode){
-            if (m_oldVariableName==ui->leName->text()){
-                m_variablesContainer->changeVariable(m_oldVariableName,value());
+        static int enumIndex = LimeReport::Enums::staticMetaObject.indexOfEnumerator("VariableDataType");
+        QMetaEnum enumerator = LimeReport::Enums::staticMetaObject.enumerator(enumIndex);
+
+        if (m_variablesContainer&&!ui->leName->text().isEmpty()){
+            if (m_changeMode){
+                if (m_oldVariableName==ui->leName->text()){
+                    m_variablesContainer->changeVariable(m_oldVariableName,value());
+                } else {
+                    m_variablesContainer->deleteVariable(m_oldVariableName);
+                    m_variablesContainer->addVariable(ui->leName->text(),value(), LimeReport::VarDesc::Report);
+                }
             } else {
-                m_variablesContainer->deleteVariable(m_oldVariableName);
                 m_variablesContainer->addVariable(ui->leName->text(),value(), LimeReport::VarDesc::Report);
             }
-        } else {
-            m_variablesContainer->addVariable(ui->leName->text(),value(), LimeReport::VarDesc::Report);
+            m_variablesContainer->setVarableMandatory(ui->leName->text(),ui->cbbMandatory->isChecked());
+            m_variablesContainer->setVariableDataType(
+                ui->leName->text(),
+                LimeReport::VariableDataType(enumerator.keysToValue(ui->cbbType->currentText().toLatin1()))
+            );
+            emit signalVariableAccepted(ui->leName->text());
+            QDialog::accept();
         }
-        emit signalVariableAccepted(ui->leName->text());
-        QDialog::accept();
-    }
     } catch (LimeReport::ReportError &exception){
         QMessageBox::critical(this,tr("Attention"),exception.what());
     }
diff --git a/limereport/databrowser/lrvariabledialog.ui b/limereport/databrowser/lrvariabledialog.ui
index df97830..f372c73 100644
--- a/limereport/databrowser/lrvariabledialog.ui
+++ b/limereport/databrowser/lrvariabledialog.ui
@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>218</width>
-    <height>126</height>
+    <width>328</width>
+    <height>173</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -18,35 +18,8 @@
     <normaloff>:/databrowser/images/value</normaloff>:/databrowser/images/value</iconset>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
-   <property name="spacing">
-    <number>2</number>
-   </property>
-   <property name="leftMargin">
-    <number>4</number>
-   </property>
-   <property name="topMargin">
-    <number>4</number>
-   </property>
-   <property name="rightMargin">
-    <number>4</number>
-   </property>
-   <property name="bottomMargin">
-    <number>4</number>
-   </property>
    <item>
-    <layout class="QFormLayout" name="formLayout">
-     <property name="horizontalSpacing">
-      <number>7</number>
-     </property>
-     <property name="verticalSpacing">
-      <number>5</number>
-     </property>
-     <property name="leftMargin">
-      <number>4</number>
-     </property>
-     <property name="topMargin">
-      <number>8</number>
-     </property>
+    <layout class="QGridLayout" name="gridLayout">
      <item row="0" column="0">
       <widget class="QLabel" name="lblName">
        <property name="text">
@@ -67,9 +40,6 @@
      <item row="1" column="1">
       <widget class="QLineEdit" name="leValue"/>
      </item>
-     <item row="2" column="1">
-      <widget class="QComboBox" name="cbbType"/>
-     </item>
      <item row="2" column="0">
       <widget class="QLabel" name="lblType">
        <property name="text">
@@ -77,8 +47,31 @@
        </property>
       </widget>
      </item>
+     <item row="2" column="1">
+      <widget class="QComboBox" name="cbbType"/>
+     </item>
     </layout>
    </item>
+   <item>
+    <widget class="QCheckBox" name="cbbMandatory">
+     <property name="text">
+      <string>Mandatory</string>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>0</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
    <item>
     <widget class="QDialogButtonBox" name="buttonBox">
      <property name="orientation">
diff --git a/limereport/lrdatasourcemanager.cpp b/limereport/lrdatasourcemanager.cpp
index f7ba818..0e03986 100644
--- a/limereport/lrdatasourcemanager.cpp
+++ b/limereport/lrdatasourcemanager.cpp
@@ -211,7 +211,7 @@ void DataSourceModel::updateModel()
     }
 
     vars = m_rootNode->addChild(tr("External variables"),DataNode::Variables,QIcon(":/report/images/folder"));
-    foreach (QString name, m_dataManager->namesOfUserVariables()){
+    foreach (QString name, m_dataManager->userVariableNames()){
         vars->addChild(name,DataNode::Variable,QIcon(":/report/images/value"));
     }
 }
@@ -1072,7 +1072,7 @@ int DataSourceManager::elementsCount(const QString &collectionName)
         return m_proxies.count();
     }
     if (collectionName=="variables"){
-        return m_reportVariables.userVariablesCount();
+        return m_reportVariables.variablesCount();
     }
     return 0;
 }
@@ -1092,7 +1092,7 @@ QObject* DataSourceManager::elementAt(const QString &collectionName, int index)
         return m_proxies.at(index);
     }
     if (collectionName=="variables"){
-        return m_reportVariables.userVariableAt(index);
+        return m_reportVariables.variableAt(index);
     }
     return 0;
 }
@@ -1160,6 +1160,8 @@ void DataSourceManager::collectionLoadFinished(const QString &collectionName)
         foreach (VarDesc* item, m_tempVars) {
             if (!m_reportVariables.containsVariable(item->name())){
                 m_reportVariables.addVariable(item->name(),item->value(),VarDesc::Report,FirstPass);
+                VarDesc* currentVar = m_reportVariables.variableByName(item->name());
+                currentVar->initFrom(item);
             }
             delete item;
         }
@@ -1454,6 +1456,19 @@ bool DataSourceManager::variableIsSystem(const QString &name)
     return false;
 }
 
+bool DataSourceManager::variableIsMandatory(const QString& name)
+{
+    if (m_reportVariables.containsVariable(name))
+        return m_reportVariables.variableByName(name)->isMandatory();
+    return false;
+}
+
+void DataSourceManager::setVarableMandatory(const QString& name, bool value)
+{
+    if (m_reportVariables.containsVariable(name))
+        m_reportVariables.variableByName(name)->setMandatory(value);
+}
+
 QStringList DataSourceManager::variableNames()
 {
     return m_reportVariables.variableNames();
@@ -1470,7 +1485,7 @@ QStringList DataSourceManager::variableNamesByRenderPass(RenderPass pass)
     return result;
 }
 
-QStringList DataSourceManager::namesOfUserVariables(){
+QStringList DataSourceManager::userVariableNames(){
     return m_userVariables.variableNames();
 }
 
@@ -1481,6 +1496,19 @@ VarDesc::VarType DataSourceManager::variableType(const QString &name)
     return VarDesc::User;
 }
 
+VariableDataType DataSourceManager::variableDataType(const QString& name)
+{
+    if (m_reportVariables.containsVariable(name))
+        return m_reportVariables.variableByName(name)->dataType();
+    return VariableDataType::Undefined;
+}
+
+void DataSourceManager::setVariableDataType(const QString& name, VariableDataType value)
+{
+    if (m_reportVariables.containsVariable(name))
+        m_reportVariables.variableByName(name)->setDataType(value);
+}
+
 void DataSourceManager::setAllDatasourcesToFirst()
 {
     foreach(IDataSourceHolder* ds,m_datasources.values()) {
diff --git a/limereport/lrdatasourcemanager.h b/limereport/lrdatasourcemanager.h
index 285a258..628a5f5 100644
--- a/limereport/lrdatasourcemanager.h
+++ b/limereport/lrdatasourcemanager.h
@@ -123,13 +123,17 @@ public:
     void clearUserVariables();
     void addVariable(const QString& name, const QVariant& value, VarDesc::VarType type=VarDesc::User, RenderPass pass=FirstPass);
     void changeVariable(const QString& name,const QVariant& value);
-    QVariant variable(const QString& variableName);
-    RenderPass variablePass(const QString& name);
+    QVariant    variable(const QString& variableName);
+    RenderPass  variablePass(const QString& name);
     QStringList variableNames();
     QStringList variableNamesByRenderPass(RenderPass pass);
-    QStringList namesOfUserVariables();
-    VarDesc::VarType variableType(const QString& name);
+    QStringList userVariableNames();
+    VarDesc::VarType   variableType(const QString& name);
+    VariableDataType   variableDataType(const QString& name);
+    void setVariableDataType(const QString &name, VariableDataType value);
     bool variableIsSystem(const QString& name);
+    bool variableIsMandatory(const QString& name);
+    void setVarableMandatory(const QString &name, bool value);
     QString queryText(const QString& dataSourceName);
     QString connectionName(const QString& dataSourceName);
     void removeDatasource(const QString& name);
diff --git a/limereport/lrdatasourcemanagerintf.h b/limereport/lrdatasourcemanagerintf.h
index c0b345e..f86e51e 100644
--- a/limereport/lrdatasourcemanagerintf.h
+++ b/limereport/lrdatasourcemanagerintf.h
@@ -31,6 +31,7 @@
 #define LRDATASOURCEMANAGERINTF_H
 
 #include "lrcallbackdatasourceintf.h"
+#include "lrglobal.h"
 
 class QVariant;
 class QString;
@@ -56,6 +57,11 @@ public:
     virtual void clearUserVariables()=0;
     virtual ICallbackDatasource* createCallbackDatasource(const QString& name) = 0;
     virtual void registerDbCredentialsProvider(IDbCredentialsProvider* provider) = 0;
+
+    virtual QStringList variableNames() = 0;
+    virtual bool variableIsMandatory(const QString& name) = 0;
+    virtual VariableDataType variableDataType(const QString& name) = 0;
+    virtual bool variableIsSystem(const QString& name) = 0;
 };
 
 }
diff --git a/limereport/lrglobal.h b/limereport/lrglobal.h
index a8ed17d..77156d3 100644
--- a/limereport/lrglobal.h
+++ b/limereport/lrglobal.h
@@ -157,6 +157,17 @@ namespace Const{
     typedef QScriptValue ScriptValueType;
 #endif
 
+    class Enums
+    {
+    public:
+        enum VariableDataType {Undefined, String, Bool, Int, Real, Date, Time, DateTime};
+        Q_ENUM(VariableDataType)
+    private:
+        Enums(){}
+        Q_GADGET
+    };
+    typedef Enums::VariableDataType VariableDataType;
+
 } // namespace LimeReport
 
 Q_DECLARE_OPERATORS_FOR_FLAGS(LimeReport::PreviewHints)
diff --git a/limereport/lrvariablesholder.cpp b/limereport/lrvariablesholder.cpp
index 9cdf630..c34dc4c 100644
--- a/limereport/lrvariablesholder.cpp
+++ b/limereport/lrvariablesholder.cpp
@@ -122,16 +122,50 @@ bool VariablesHolder::containsVariable(const QString &name)
     return m_varNames.contains(name);
 }
 
-int VariablesHolder::userVariablesCount()
+int VariablesHolder::variablesCount()
 {
     return m_userVariables.count();
 }
 
-VarDesc *VariablesHolder::userVariableAt(int index)
+VarDesc* VariablesHolder::variableByName(const QString& name)
+{
+    if (m_varNames.contains(name))
+        return m_varNames.value(name);
+    else return 0;
+}
+
+VarDesc *VariablesHolder::variableAt(int index)
 {
     return m_userVariables.at(index);
 }
 
+bool VariablesHolder::variableIsMandatory(const QString& name)
+{
+    if (m_varNames.contains(name))
+        return m_varNames.value(name)->isMandatory();
+    else return false;
+}
+
+void VariablesHolder::setVarableMandatory(const QString& name, bool value)
+{
+    if (m_varNames.contains(name))
+        m_varNames.value(name)->setMandatory(value);
+
+}
+
+VariableDataType VariablesHolder::variableDataType(const QString& name)
+{
+    if (m_varNames.contains(name))
+        return m_varNames.value(name)->dataType();
+    else return Enums::Undefined;
+}
+
+void VariablesHolder::setVariableDataType(const QString& name, VariableDataType value)
+{
+    if (m_varNames.contains(name))
+        m_varNames.value(name)->setDataType(value);
+}
+
 QStringList VariablesHolder::variableNames()
 {
     QStringList result;
@@ -148,4 +182,40 @@ RenderPass VariablesHolder::variablePass(const QString &name)
     else throw ReportError(tr("variable with name ")+name+tr(" does not exists!"));
 }
 
+bool VarDesc::isMandatory() const
+{
+    return m_mandatory;
+}
+
+void VarDesc::setMandatory(bool mandatory)
+{
+    m_mandatory = mandatory;
+}
+
+void VarDesc::initFrom(VarDesc* value)
+{
+    m_mandatory = value->isMandatory();
+    m_dataType = value->dataType();
+}
+
+VariableDataType VarDesc::dataType() const
+{
+    return m_dataType;
+}
+
+void VarDesc::setDataType(const VariableDataType& dataType)
+{
+    m_dataType = dataType;
+}
+
+int VarDesc::readDataTypeProperty() const
+{
+    return static_cast<int>(m_dataType);
+}
+
+void VarDesc::setDataTypeProperty(int value)
+{
+    m_dataType = static_cast<VariableDataType>(value);
+}
+
 }// namespace LimeReport
diff --git a/limereport/lrvariablesholder.h b/limereport/lrvariablesholder.h
index e375ea8..2c3f961 100644
--- a/limereport/lrvariablesholder.h
+++ b/limereport/lrvariablesholder.h
@@ -42,7 +42,10 @@ class VarDesc : public QObject{
     Q_OBJECT
     Q_PROPERTY(QString name READ name WRITE setName)
     Q_PROPERTY(QVariant value READ value WRITE setValue)
+    Q_PROPERTY(bool isMandatory READ isMandatory WRITE setMandatory)
+    Q_PROPERTY(int dataType READ readDataTypeProperty WRITE setDataTypeProperty)
 public:
+    VarDesc() : m_dataType(VariableDataType::Undefined), m_mandatory(false){}
     enum VarType {System, User, Report};
     void setVarType(VarType value){m_varType=value;}
     VarType varType(){return m_varType;}
@@ -52,26 +55,39 @@ public:
     QString name(){return m_name;}
     void setValue(QVariant value){m_value=value;}
     QVariant value(){return m_value;}
+    VariableDataType dataType() const;
+    void setDataType(const VariableDataType& dataType);
+    int  readDataTypeProperty() const;
+    void setDataTypeProperty(int value);
+    bool isMandatory() const;
+    void setMandatory(bool isMandatory);
+    void initFrom(VarDesc* value);
 private:
     VarType     m_varType;
     RenderPass  m_varPass;
     QString     m_name;
     QVariant    m_value;
+    VariableDataType m_dataType;
+    bool        m_mandatory;
 };
 
 class IVariablesContainer
 {
 public:
     virtual ~IVariablesContainer(){}
-    virtual void addVariable(const QString &name, const QVariant &value, VarDesc::VarType type=VarDesc::User, RenderPass pass=FirstPass)=0;
-    virtual void deleteVariable(const QString &name)=0;
-    virtual void changeVariable(const QString &name, const QVariant &value)=0;
-    virtual void clearUserVariables()=0;
-    virtual QVariant variable(const QString &name)=0;
-    virtual VarDesc::VarType variableType(const QString &name)=0;
-    virtual RenderPass variablePass(const QString &name)=0;
-    virtual bool containsVariable(const QString &name)=0;
-    virtual QStringList variableNames()=0;
+    virtual void addVariable(const QString& name, const QVariant &value, VarDesc::VarType type=VarDesc::User, RenderPass pass=FirstPass) = 0;
+    virtual void deleteVariable(const QString& name) = 0;
+    virtual void changeVariable(const QString& name, const QVariant &value) = 0;
+    virtual void clearUserVariables() = 0;
+    virtual QVariant variable(const QString& name) = 0;
+    virtual VarDesc::VarType variableType(const QString& name) = 0;
+    virtual RenderPass variablePass(const QString& name) = 0;
+    virtual bool containsVariable(const QString& name) = 0;
+    virtual QStringList variableNames() = 0;
+    virtual bool variableIsMandatory(const QString& name) = 0;
+    virtual void setVarableMandatory(const QString& name, bool value) = 0;
+    virtual VariableDataType variableDataType(const QString& name) = 0;
+    virtual void setVariableDataType(const QString& name, VariableDataType value) = 0;
 };
 
 class VariablesHolder : public QObject, public IVariablesContainer
@@ -85,12 +101,17 @@ public:
     void changeVariable(const QString &name, const QVariant &value);
     void clearUserVariables();
     QVariant variable(const QString &name);
-    VarDesc::VarType variableType(const QString &name);
-    RenderPass variablePass(const QString &name);
-    bool containsVariable(const QString &name);
-    QStringList variableNames();
-    int userVariablesCount();
-    VarDesc* userVariableAt(int index);
+    VarDesc::VarType variableType(const QString& name);
+    RenderPass       variablePass(const QString &name);
+    bool             containsVariable(const QString &name);
+    QStringList      variableNames();
+    int      variablesCount();
+    VarDesc* variableByName(const QString& name);
+    VarDesc* variableAt(int index);
+    bool     variableIsMandatory(const QString& name);
+    void     setVarableMandatory(const QString &name, bool value);
+    VariableDataType variableDataType(const QString& name);
+    void setVariableDataType(const QString &name, VariableDataType value);
 signals:
     void variableHasBeenAdded(const QString& variableName);
     void variableHasBeenChanged(const QString& variableName);