diff --git a/src/qchart.cpp b/src/qchart.cpp
index ab80291..8b3a3e2 100644
--- a/src/qchart.cpp
+++ b/src/qchart.cpp
@@ -1,6 +1,7 @@
 #include "qchart.h"
 #include "qchartseries.h"
 #include "xylinechartitem_p.h"
+#include "xyplotdata_p.h"
 #include "axis_p.h"
 #include "xygrid_p.h"
 #include <QDebug>
@@ -18,19 +19,21 @@ m_plotDataIndex(0)
     // set axis
         m_axisY->rotate(90);
 
-        XYPlotData data;
-        data.m_minX = 0.0;
-        data.m_maxX = 100.0;
-        data.m_minY = 0.0;
-        data.m_maxY = 100.0;
-        data.m_ticksX=4;
-        data.m_ticksY=4;
+
+        //TODO hardcoded values , to removed soon
+        XYPlotData* data = new XYPlotData();
+        data->m_minX = 0.0;
+        data->m_maxX = 100.0;
+        data->m_minY = 0.0;
+        data->m_maxY = 100.0;
+        data->m_ticksX=4;
+        data->m_ticksY=4;
 
         m_plotDataList.clear();
         m_plotDataList << data;
 
         m_grid->setZValue(10);
-        m_grid->setXYPlotData(m_plotDataList.at(0));
+        m_grid->setXYPlotData(*m_plotDataList.at(0));
 }
 
 QChart::~QChart(){}
@@ -47,9 +50,8 @@ void QChart::addSeries(QChartSeries* series)
     switch(series->type())
     {
     case QChartSeries::LINE:
-        qDebug()<<"xyline added";
         XYLineChartItem* item = new XYLineChartItem(reinterpret_cast<QXYChartSeries*>(series),this);
-        item->setXYPlotData(m_plotDataList.at(0));
+        item->setXYPlotData(*m_plotDataList.at(0));
         m_items<<item;
         break;
     }
diff --git a/src/qchart.h b/src/qchart.h
index 7447f0a..6e1ada4 100644
--- a/src/qchart.h
+++ b/src/qchart.h
@@ -2,8 +2,6 @@
 #define CHART_H
 
 #include <qchartconfig.h>
-//TODO: temporary class
-#include <xyplotdata_p.h>
 #include <QGraphicsItem>
 
 QCHART_BEGIN_NAMESPACE
@@ -11,6 +9,7 @@ QCHART_BEGIN_NAMESPACE
 class Axis;
 class XYGrid;
 class QChartSeries;
+class XYPlotData;
 
 class QCHART_EXPORT QChart : public QGraphicsItem
 {
@@ -35,7 +34,7 @@ private:
     Axis* m_axisX;
     Axis* m_axisY;
     XYGrid* m_grid;
-    QList<XYPlotData> m_plotDataList;
+    QList<XYPlotData*> m_plotDataList;
     QList<QGraphicsItem*> m_items;
     int m_plotDataIndex;
     int m_marginSize;
diff --git a/src/src.pro b/src/src.pro
index e337848..b6cc1ae 100644
--- a/src/src.pro
+++ b/src/src.pro
@@ -16,6 +16,7 @@ SOURCES += \
 
 PRIVATE_HEADERS += \ 
     xylinechart/xylinechartitem_p.h \
+    xylinechart/xyplotdata_p.h \# to be removed  
     xylinechart/xygrid_p.h \
     axis_p.h
     
@@ -24,8 +25,7 @@ PUBLIC_HEADERS += \
     qchart.h \
     qchartwidget.h \
     qchartconfig.h \ 
-    xylinechart/qxychartseries.h \
-    xylinechart/xyplotdata_p.h # to be removed  
+    xylinechart/qxychartseries.h 
    
 HEADERS += $$PUBLIC_HEADERS
 HEADERS += $$PRIVATE_HEADERS