diff --git a/demo_r1/mainwindow.cpp b/demo_r1/mainwindow.cpp
index b5afab8..bc96811 100644
--- a/demo_r1/mainwindow.cpp
+++ b/demo_r1/mainwindow.cpp
@@ -76,14 +76,16 @@ MainWindow::MainWindow(QWidget *parent) :
             this, SLOT(slotGetCallbackData(LimeReport::CallbackInfo,QVariant&)));
     connect(callbackDatasource, SIGNAL(changePos(const LimeReport::CallbackInfo::ChangePosType&,bool&)),
             this, SLOT(slotChangePos(const LimeReport::CallbackInfo::ChangePosType&,bool&)));
-    //report->dataManager()->addCallbackDatasource(callbackDatasource,"master");
 
     callbackDatasource = report->dataManager()->createCallbackDatasouce("detail");
     connect(callbackDatasource, SIGNAL(getCallbackData(LimeReport::CallbackInfo,QVariant&)),
             this, SLOT(slotGetCallbackChildData(LimeReport::CallbackInfo,QVariant&)));
     connect(callbackDatasource, SIGNAL(changePos(const LimeReport::CallbackInfo::ChangePosType&,bool&)),
             this, SLOT(slotChangeChildPos(const LimeReport::CallbackInfo::ChangePosType&,bool&)));
-    //report->dataManager()->addCallbackDatasource(callbackDatasource,"detail");
+
+    callbackDatasource = report->dataManager()->createCallbackDatasouce("oneSlotDS");
+    connect(callbackDatasource, SIGNAL(getCallbackData(LimeReport::CallbackInfo,QVariant&)),
+            this, SLOT(slotOneSlotDS(LimeReport::CallbackInfo,QVariant&)));
 
     QStringList simpleData;
     simpleData << "value1" << "value2" << "value3";
@@ -208,3 +210,32 @@ void MainWindow::slotChangeChildPos(const LimeReport::CallbackInfo::ChangePosTyp
     if (type == LimeReport::CallbackInfo::First) result = ds->first();
     else result = ds->next();
 }
+
+void MainWindow::slotOneSlotDS(LimeReport::CallbackInfo info, QVariant &data)
+{
+    QStringList columns;
+    columns << "Name" << "Value" << "Image";
+    switch (info.dataType) {
+            case LimeReport::CallbackInfo::RowCount:
+                data = 4;
+                break;
+            case LimeReport::CallbackInfo::ColumnCount:
+                data = columns.size();
+                break;
+//            case LimeReport::CallbackInfo::IsEmpty:
+//                data = false;
+//                break;
+            case LimeReport::CallbackInfo::ColumnHeaderData: {
+                data = columns.at(info.index);
+                break;
+            }
+            case LimeReport::CallbackInfo::ColumnData:
+                if (info.columnName == "Image")
+                    data = QImage(":/report//images/logo32");
+                else {
+                    data = info.columnName+" "+QString::number(info.index);
+                }
+                break;
+            default: break;
+        }
+}
diff --git a/demo_r1/mainwindow.h b/demo_r1/mainwindow.h
index e5bbd32..e8d7ff1 100644
--- a/demo_r1/mainwindow.h
+++ b/demo_r1/mainwindow.h
@@ -57,6 +57,7 @@ private slots:
     void slotChangePos(const LimeReport::CallbackInfo::ChangePosType& type, bool& result);
     void slotGetCallbackChildData(LimeReport::CallbackInfo info, QVariant& data);
     void slotChangeChildPos(const LimeReport::CallbackInfo::ChangePosType& type, bool& result);
+    void slotOneSlotDS(LimeReport::CallbackInfo info, QVariant& data);
 private:
     void prepareData(QSqlQuery* ds, LimeReport::CallbackInfo info, QVariant &data);
 private: