diff --git a/limereport/lrscriptenginemanager.cpp b/limereport/lrscriptenginemanager.cpp
index 3c16fbb..94dc11f 100644
--- a/limereport/lrscriptenginemanager.cpp
+++ b/limereport/lrscriptenginemanager.cpp
@@ -1797,12 +1797,28 @@ QObject* ComboBoxWrapperCreator::createWrapper(QObject *item)
     return 0;
 }
 
+bool DatasourceFunctions::first(const QString& datasourceName)
+{
+    if (m_dataManager && m_dataManager->dataSource(datasourceName)){
+        m_dataManager->dataSource(datasourceName)->first();
+        return true;
+    }
+    return false;
+}
+
 bool DatasourceFunctions::next(const QString &datasourceName){
     if (m_dataManager && m_dataManager->dataSource(datasourceName))
         return m_dataManager->dataSource(datasourceName)->next();
     return false;
 }
 
+bool DatasourceFunctions::prior(const QString& datasourceName)
+{
+    if (m_dataManager && m_dataManager->dataSource(datasourceName))
+        return m_dataManager->dataSource(datasourceName)->prior();
+    return false;
+}
+
 bool DatasourceFunctions::isEOF(const QString &datasourceName)
 {
     if (m_dataManager && m_dataManager->dataSource(datasourceName))
@@ -1810,6 +1826,14 @@ bool DatasourceFunctions::isEOF(const QString &datasourceName)
     return false;
 }
 
+bool DatasourceFunctions::invalidate(const QString& datasourceName)
+{
+    if (m_dataManager && m_dataManager->dataSource(datasourceName)){
+        m_dataManager->dataSourceHolder(datasourceName)->invalidate(IDataSource::DatasourceMode::RENDER_MODE);
+        return true;
+    }
+    return false;
+}
 
 #ifndef USE_QJSENGINE
 void ComboBoxPrototype::addItem(const QString &text)
diff --git a/limereport/lrscriptenginemanager.h b/limereport/lrscriptenginemanager.h
index 30c5d38..bbdef99 100644
--- a/limereport/lrscriptenginemanager.h
+++ b/limereport/lrscriptenginemanager.h
@@ -302,8 +302,12 @@ class DatasourceFunctions : public QObject{
     Q_OBJECT
 public:
     explicit DatasourceFunctions(IDataSourceManager* dataManager): m_dataManager(dataManager){}
+    Q_INVOKABLE bool first(const QString& datasourceName);
     Q_INVOKABLE bool next(const QString& datasourceName);
+    Q_INVOKABLE bool prior(const QString& datasourceName);
     Q_INVOKABLE bool isEOF(const QString& datasourceName);
+    Q_INVOKABLE bool invalidate(const QString& datasourceName);
+
 private:
     IDataSourceManager* m_dataManager;
 };