diff --git a/demos/qmlcustommodel/qml/qmlcustommodel/main.qml b/demos/qmlcustommodel/qml/qmlcustommodel/main.qml
index cbcb77f..31d3145 100644
--- a/demos/qmlcustommodel/qml/qmlcustommodel/main.qml
+++ b/demos/qmlcustommodel/qml/qmlcustommodel/main.qml
@@ -149,7 +149,7 @@ Rectangle {
             model: customModel
             labelsColumn: 1
             valuesColumn: 2
-            first: 1
+            firstRow: 1
         }
     }
 }
diff --git a/src/piechart/qhpiemodelmapper.cpp b/src/piechart/qhpiemodelmapper.cpp
index 8869424..94173cc 100644
--- a/src/piechart/qhpiemodelmapper.cpp
+++ b/src/piechart/qhpiemodelmapper.cpp
@@ -48,6 +48,28 @@ QTCOMMERCIALCHART_BEGIN_NAMESPACE
 */
 
 /*!
+    \property QHPieModelMapper::firstColumn
+    \brief Defines which column of the model contains the first slice value.
+    Minimal and default value is: 0
+*/
+/*!
+    \qmlproperty int QHPieModelMapper::firstColumn
+    Defines which column of the model contains the first slice value.
+    The default value is 0.
+*/
+
+/*!
+    \property QHPieModelMapper::columnCount
+    \brief Defines the number of columns of the model that are mapped as the data for QPieSeries
+    Minimal and default value is: -1 (count limited by the number of columns in the model)
+*/
+/*!
+    \qmlproperty int QHPieModelMapper::columnCount
+    Defines the number of columns of the model that are mapped as the data for QPieSeries. The default value is
+    -1 (count limited by the number of columns in the model)
+*/
+
+/*!
     \fn void QHPieModelMapper::valuesRowChanged()
 
     Emitted when the valuesRow has changed.
@@ -60,12 +82,22 @@ QTCOMMERCIALCHART_BEGIN_NAMESPACE
 */
 
 /*!
+    \fn void QHPieModelMapper::firstColumnChanged()
+    Emitted when the firstColumn has changed.
+*/
+
+/*!
+    \fn void QHPieModelMapper::columnCountChanged()
+    Emitted when the columnCount has changed.
+*/
+
+/*!
     Constructs a mapper object which is a child of \a parent.
 */
 QHPieModelMapper::QHPieModelMapper(QObject *parent) :
     QPieModelMapper(parent)
 {
-    QPieModelMapper::setOrientation(Qt::Horizontal);
+    setOrientation(Qt::Horizontal);
 }
 
 /*!
@@ -73,7 +105,7 @@ QHPieModelMapper::QHPieModelMapper(QObject *parent) :
 */
 int QHPieModelMapper::valuesRow() const
 {
-    return QPieModelMapper::valuesSection();
+    return valuesSection();
 }
 
 /*!
@@ -83,7 +115,7 @@ int QHPieModelMapper::valuesRow() const
 void QHPieModelMapper::setValuesRow(int valuesRow)
 {
     if (valuesRow != valuesSection()) {
-        QPieModelMapper::setValuesSection(valuesRow);
+        setValuesSection(valuesRow);
         emit valuesRowChanged();
     }
 }
@@ -93,7 +125,7 @@ void QHPieModelMapper::setValuesRow(int valuesRow)
 */
 int QHPieModelMapper::labelsRow() const
 {
-    return QPieModelMapper::labelsSection();
+    return labelsSection();
 }
 
 /*!
@@ -103,11 +135,37 @@ int QHPieModelMapper::labelsRow() const
 void QHPieModelMapper::setLabelsRow(int labelsRow)
 {
     if (labelsRow != labelsSection()) {
-        QPieModelMapper::setLabelsSection(labelsRow);
+        setLabelsSection(labelsRow);
         emit labelsRowChanged();
     }
 }
 
+int QHPieModelMapper::firstColumn() const
+{
+    return first();
+}
+
+void QHPieModelMapper::setFirstColumn(int firstColumn)
+{
+    if (firstColumn != first()) {
+        setFirst(firstColumn);
+        emit firstColumnChanged();
+    }
+}
+
+int QHPieModelMapper::columnCount() const
+{
+    return count();
+}
+
+void QHPieModelMapper::setColumnCount(int columnCount)
+{
+    if (columnCount != count()) {
+        setCount(columnCount);
+        emit firstColumnChanged();
+    }
+}
+
 #include "moc_qhpiemodelmapper.cpp"
 
 QTCOMMERCIALCHART_END_NAMESPACE
diff --git a/src/piechart/qhpiemodelmapper.h b/src/piechart/qhpiemodelmapper.h
index 1c04877..ae5bff1 100644
--- a/src/piechart/qhpiemodelmapper.h
+++ b/src/piechart/qhpiemodelmapper.h
@@ -30,6 +30,8 @@ class QTCOMMERCIALCHART_EXPORT QHPieModelMapper : public QPieModelMapper
     Q_OBJECT
     Q_PROPERTY(int valuesRow READ valuesRow WRITE setValuesRow NOTIFY valuesRowChanged)
     Q_PROPERTY(int labelsRow READ labelsRow WRITE setLabelsRow NOTIFY labelsRowChanged)
+    Q_PROPERTY(int firstColumn READ firstColumn WRITE setFirstColumn NOTIFY firstColumnChanged)
+    Q_PROPERTY(int columnCount READ columnCount WRITE setColumnCount NOTIFY columnCountChanged)
 
 public:
     explicit QHPieModelMapper(QObject *parent = 0);
@@ -40,9 +42,17 @@ public:
     int labelsRow() const;
     void setLabelsRow(int labelsRow);
 
+    int firstColumn() const;
+    void setFirstColumn(int firstColumn);
+
+    int columnCount() const;
+    void setColumnCount(int columnCount);
+
 Q_SIGNALS:
     void valuesRowChanged();
     void labelsRowChanged();
+    void firstColumnChanged();
+    void columnCountChanged();
 };
 
 QTCOMMERCIALCHART_END_NAMESPACE
diff --git a/src/piechart/qpiemodelmapper.cpp b/src/piechart/qpiemodelmapper.cpp
index 6a67816..3647bb4 100644
--- a/src/piechart/qpiemodelmapper.cpp
+++ b/src/piechart/qpiemodelmapper.cpp
@@ -51,20 +51,6 @@ QTCOMMERCIALCHART_BEGIN_NAMESPACE
 */
 
 /*!
-    \property QPieModelMapper::first
-    \brief Defines which item of the model's row/column should be mapped as the value/label of the first slice of the pie
-
-    Minimal and default value is: 0
-*/
-
-/*!
-    \property QPieModelMapper::count
-    \brief Defines the number of rows/columns of the model that are mapped as the data for the pie.
-
-    Minimal and default value is: -1 (count limited by the number of rows/columns in the model)
-*/
-
-/*!
     \fn void QPieModelMapper::seriesReplaced()
 
     Emitted when the series to which mapper is connected to has changed.
@@ -77,18 +63,6 @@ QTCOMMERCIALCHART_BEGIN_NAMESPACE
 */
 
 /*!
-    \fn void QPieModelMapper::firstChanged()
-
-    Emitted when the value for the first has changed.
-*/
-
-/*!
-    \fn void QPieModelMapper::countChanged()
-
-    Emitted when the value for the count has changed.
-*/
-
-/*!
     Constructs a mapper object which is a child of \a parent.
 */
 QPieModelMapper::QPieModelMapper(QObject *parent) :
@@ -150,38 +124,46 @@ void QPieModelMapper::setSeries(QPieSeries *series)
     emit seriesReplaced();
 }
 
+/*!
+    Defines which row/column of the model contains the first slice value.
+    Minimal and default value is: 0
+*/
 int QPieModelMapper::first() const
 {
     Q_D(const QPieModelMapper);
     return d->m_first;
 }
 
+/*!
+    Sets which row/column of the model contains the \a first slice value.
+    Minimal and default value is: 0
+*/
 void QPieModelMapper::setFirst(int first)
 {
     Q_D(QPieModelMapper);
-    if (first != d->m_first) {
-        d->m_first = qMax(first, 0);
-        d->initializePieFromModel();
-
-        emit firstChanged();
-    }
+    d->m_first = qMax(first, 0);
+    d->initializePieFromModel();
 }
 
+/*!
+    Defines the number of rows/columns of the model that are mapped as the data for QPieSeries
+    Minimal and default value is: -1 (count limited by the number of rows/columns in the model)
+*/
 int QPieModelMapper::count() const
 {
     Q_D(const QPieModelMapper);
     return d->m_count;
 }
 
+/*!
+    Defines the \a count of rows/columns of the model that are mapped as the data for QPieSeries
+    Minimal and default value is: -1 (count limited by the number of rows/columns in the model)
+*/
 void QPieModelMapper::setCount(int count)
 {
     Q_D(QPieModelMapper);
-    if (count != d->m_count) {
-        d->m_count = qMax(count, -1);
-        d->initializePieFromModel();
-
-        emit countChanged();
-    }
+    d->m_count = qMax(count, -1);
+    d->initializePieFromModel();
 }
 
 /*!
diff --git a/src/piechart/qpiemodelmapper.h b/src/piechart/qpiemodelmapper.h
index 20934a0..5599bda 100644
--- a/src/piechart/qpiemodelmapper.h
+++ b/src/piechart/qpiemodelmapper.h
@@ -36,8 +36,6 @@ class QTCOMMERCIALCHART_EXPORT QPieModelMapper : public QObject
     Q_OBJECT
     Q_PROPERTY(QPieSeries *series READ series WRITE setSeries NOTIFY seriesReplaced)
     Q_PROPERTY(QAbstractItemModel *model READ model WRITE setModel NOTIFY modelReplaced)
-    Q_PROPERTY(int first READ first WRITE setFirst NOTIFY firstChanged)
-    Q_PROPERTY(int count READ count WRITE setCount NOTIFY countChanged)
     Q_ENUMS(Qt::Orientation)
 
 protected:
@@ -50,15 +48,15 @@ public:
     QPieSeries* series() const;
     void setSeries(QPieSeries *series);
 
+    void reset();
+
+protected:
     int first() const;
     void setFirst(int first);
 
     int count() const;
     void setCount(int count);
 
-    void reset();
-
-protected:
     int valuesSection() const;
     void setValuesSection(int valuesSection);
 
@@ -71,8 +69,6 @@ protected:
 Q_SIGNALS:
     void seriesReplaced();
     void modelReplaced();
-    void firstChanged();
-    void countChanged();
 
 protected:
     QPieModelMapperPrivate * const d_ptr;
diff --git a/src/piechart/qvpiemodelmapper.cpp b/src/piechart/qvpiemodelmapper.cpp
index 2f155d0..93731a4 100644
--- a/src/piechart/qvpiemodelmapper.cpp
+++ b/src/piechart/qvpiemodelmapper.cpp
@@ -48,6 +48,28 @@ QTCOMMERCIALCHART_BEGIN_NAMESPACE
 */
 
 /*!
+    \property QVPieModelMapper::firstRow
+    \brief Defines which row of the model contains the first slice value.
+    Minimal and default value is: 0
+*/
+/*!
+    \qmlproperty int QVPieModelMapper::firstRow
+    Defines which row of the model contains the first slice value.
+    The default value is 0.
+*/
+
+/*!
+    \property QVPieModelMapper::rowCount
+    \brief Defines the number of rows of the model that are mapped as the data for QPieSeries
+    Minimal and default value is: -1 (count limited by the number of rows in the model)
+*/
+/*!
+    \qmlproperty int QVPieModelMapper::columnCount
+    Defines the number of rows of the model that are mapped as the data for QPieSeries. The default value is
+    -1 (count limited by the number of rows in the model)
+*/
+
+/*!
     \fn void QVPieModelMapper::valuesColumnChanged()
 
     Emitted when the valuesColumn has changed.
@@ -60,6 +82,16 @@ QTCOMMERCIALCHART_BEGIN_NAMESPACE
 */
 
 /*!
+    \fn void QVPieModelMapper::firstRowChanged()
+    Emitted when the firstRow has changed.
+*/
+
+/*!
+    \fn void QVPieModelMapper::rowCountChanged()
+    Emitted when the rowCount has changed.
+*/
+
+/*!
     Constructs a mapper object which is a child of \a parent.
 */
 QVPieModelMapper::QVPieModelMapper(QObject *parent) :
@@ -108,6 +140,32 @@ void QVPieModelMapper::setLabelsColumn(int labelsColumn)
     }
 }
 
+int QVPieModelMapper::firstRow() const
+{
+    return first();
+}
+
+void QVPieModelMapper::setFirstRow(int firstRow)
+{
+    if (firstRow != first()) {
+        setFirst(firstRow);
+        emit firstRowChanged();
+    }
+}
+
+int QVPieModelMapper::rowCount() const
+{
+    return count();
+}
+
+void QVPieModelMapper::setRowCount(int rowCount)
+{
+    if (rowCount != count()) {
+        setCount(rowCount);
+        emit firstRowChanged();
+    }
+}
+
 #include "moc_qvpiemodelmapper.cpp"
 
 QTCOMMERCIALCHART_END_NAMESPACE
diff --git a/src/piechart/qvpiemodelmapper.h b/src/piechart/qvpiemodelmapper.h
index 4321094..b0afdf9 100644
--- a/src/piechart/qvpiemodelmapper.h
+++ b/src/piechart/qvpiemodelmapper.h
@@ -30,6 +30,8 @@ class QTCOMMERCIALCHART_EXPORT QVPieModelMapper : public QPieModelMapper
     Q_OBJECT
     Q_PROPERTY(int valuesColumn READ valuesColumn WRITE setValuesColumn NOTIFY valuesColumnChanged)
     Q_PROPERTY(int labelsColumn READ labelsColumn WRITE setLabelsColumn NOTIFY labelsColumnChanged)
+    Q_PROPERTY(int firstRow READ firstRow WRITE setFirstRow NOTIFY firstRowChanged)
+    Q_PROPERTY(int rowCount READ rowCount WRITE setRowCount NOTIFY rowCountChanged)
 
 public:
     explicit QVPieModelMapper(QObject *parent = 0);
@@ -40,9 +42,17 @@ public:
     int labelsColumn() const;
     void setLabelsColumn(int labelsColumn);
 
+    int firstRow() const;
+    void setFirstRow(int firstRow);
+
+    int rowCount() const;
+    void setRowCount(int rowCount);
+
 Q_SIGNALS:
     void valuesColumnChanged();
     void labelsColumnChanged();
+    void firstRowChanged();
+    void rowCountChanged();
 };
 
 QTCOMMERCIALCHART_END_NAMESPACE
diff --git a/tests/auto/qpiemodelmapper/tst_qpiemodelmapper.cpp b/tests/auto/qpiemodelmapper/tst_qpiemodelmapper.cpp
index 4b2ef1c..675425b 100644
--- a/tests/auto/qpiemodelmapper/tst_qpiemodelmapper.cpp
+++ b/tests/auto/qpiemodelmapper/tst_qpiemodelmapper.cpp
@@ -215,8 +215,8 @@ void tst_qpiemodelmapper::verticalMapperCustomMapping()
     mapper->setLabelsColumn(1);
     mapper->setModel(m_model);
     mapper->setSeries(m_series);
-    mapper->setFirst(first);
-    mapper->setCount(countLimit);
+    mapper->setFirstRow(first);
+    mapper->setRowCount(countLimit);
 
     QCOMPARE(m_series->count(), expectedCount);
 
@@ -292,8 +292,8 @@ void tst_qpiemodelmapper::horizontalMapperCustomMapping()
     mapper->setLabelsRow(1);
     mapper->setModel(m_model);
     mapper->setSeries(m_series);
-    mapper->setFirst(first);
-    mapper->setCount(countLimit);
+    mapper->setFirstColumn(first);
+    mapper->setColumnCount(countLimit);
 
     QCOMPARE(m_series->count(), expectedCount);
 
@@ -312,15 +312,15 @@ void tst_qpiemodelmapper::seriesUpdated()
     // setup the mapper
     createVerticalMapper();
     QCOMPARE(m_series->count(), m_modelRowCount);
-    QCOMPARE(m_vMapper->count(), -1);
+    QCOMPARE(m_vMapper->rowCount(), -1);
 
     m_series->append("1000", 1000);
     QCOMPARE(m_series->count(), m_modelRowCount + 1);
-    QCOMPARE(m_vMapper->count(), -1); // the value should not change as it indicates 'all' items there are in the model
+    QCOMPARE(m_vMapper->rowCount(), -1); // the value should not change as it indicates 'all' items there are in the model
 
     m_series->remove(m_series->slices().last());
     QCOMPARE(m_series->count(), m_modelRowCount);
-    QCOMPARE(m_vMapper->count(), -1); // the value should not change as it indicates 'all' items there are in the model
+    QCOMPARE(m_vMapper->rowCount(), -1); // the value should not change as it indicates 'all' items there are in the model
 
     QPieSlice *slice = m_series->slices().first();
     slice->setValue(25.0);
@@ -341,23 +341,23 @@ void tst_qpiemodelmapper::verticalModelInsertRows()
     QCOMPARE(m_series->count(), m_modelRowCount + insertCount);
 
     int first = 3;
-    m_vMapper->setFirst(3);
+    m_vMapper->setFirstRow(3);
     QCOMPARE(m_series->count(), m_modelRowCount + insertCount - first);
 
     m_model->insertRows(3, insertCount);
     QCOMPARE(m_series->count(), m_modelRowCount +  2 * insertCount - first);
 
     int countLimit = 6;
-    m_vMapper->setCount(countLimit);
+    m_vMapper->setRowCount(countLimit);
     QCOMPARE(m_series->count(), qMin(countLimit, m_modelRowCount + 2 * insertCount - first));
 
     m_model->insertRows(3, insertCount);
     QCOMPARE(m_series->count(), qMin(countLimit, m_modelRowCount + 3 * insertCount - first));
 
-    m_vMapper->setFirst(0);
+    m_vMapper->setFirstRow(0);
     QCOMPARE(m_series->count(), qMin(countLimit, m_modelRowCount + 3 * insertCount));
 
-    m_vMapper->setCount(-1);
+    m_vMapper->setRowCount(-1);
     QCOMPARE(m_series->count(), m_modelRowCount + 3 * insertCount);
 }
 
@@ -373,23 +373,23 @@ void tst_qpiemodelmapper::verticalModelRemoveRows()
     QCOMPARE(m_series->count(), m_modelRowCount - removeCount);
 
     int first = 1;
-    m_vMapper->setFirst(first);
+    m_vMapper->setFirstRow(first);
     QCOMPARE(m_series->count(), m_modelRowCount - removeCount - first);
 
     m_model->removeRows(1, removeCount);
     QCOMPARE(m_series->count(), m_modelRowCount -  2 * removeCount - first);
 
     int countLimit = 3;
-    m_vMapper->setCount(countLimit);
+    m_vMapper->setRowCount(countLimit);
     QCOMPARE(m_series->count(), qMin(countLimit, m_modelRowCount -  2 * removeCount - first));
 
     m_model->removeRows(1, removeCount);
     QCOMPARE(m_series->count(), qMin(countLimit, m_modelRowCount -  3 * removeCount - first));
 
-    m_vMapper->setFirst(0);
+    m_vMapper->setFirstRow(0);
     QCOMPARE(m_series->count(), qMin(countLimit, m_modelRowCount -  3 * removeCount));
 
-    m_vMapper->setCount(-1);
+    m_vMapper->setRowCount(-1);
     QCOMPARE(m_series->count(), m_modelRowCount -  3 * removeCount);
 }
 
@@ -461,23 +461,23 @@ void tst_qpiemodelmapper::horizontalModelInsertColumns()
     QCOMPARE(m_series->count(), m_modelColumnCount + insertCount);
 
     int first = 3;
-    m_hMapper->setFirst(3);
+    m_hMapper->setFirstColumn(3);
     QCOMPARE(m_series->count(), m_modelColumnCount + insertCount - first);
 
     m_model->insertColumns(3, insertCount);
     QCOMPARE(m_series->count(), m_modelColumnCount +  2 * insertCount - first);
 
     int countLimit = 6;
-    m_hMapper->setCount(countLimit);
+    m_hMapper->setColumnCount(countLimit);
     QCOMPARE(m_series->count(), qMin(countLimit, m_modelColumnCount + 2 * insertCount - first));
 
     m_model->insertColumns(3, insertCount);
     QCOMPARE(m_series->count(), qMin(countLimit, m_modelColumnCount + 3 * insertCount - first));
 
-    m_hMapper->setFirst(0);
+    m_hMapper->setFirstColumn(0);
     QCOMPARE(m_series->count(), qMin(countLimit, m_modelColumnCount + 3 * insertCount));
 
-    m_hMapper->setCount(-1);
+    m_hMapper->setColumnCount(-1);
     QCOMPARE(m_series->count(), m_modelColumnCount + 3 * insertCount);
 }
 
@@ -493,23 +493,23 @@ void tst_qpiemodelmapper::horizontalModelRemoveColumns()
     QCOMPARE(m_series->count(), m_modelColumnCount - removeCount);
 
     int first = 1;
-    m_hMapper->setFirst(first);
+    m_hMapper->setFirstColumn(first);
     QCOMPARE(m_series->count(), m_modelColumnCount - removeCount - first);
 
     m_model->removeColumns(1, removeCount);
     QCOMPARE(m_series->count(), m_modelColumnCount -  2 * removeCount - first);
 
     int countLimit = 3;
-    m_hMapper->setCount(countLimit);
+    m_hMapper->setColumnCount(countLimit);
     QCOMPARE(m_series->count(), qMin(countLimit, m_modelColumnCount -  2 * removeCount - first));
 
     m_model->removeColumns(1, removeCount);
     QCOMPARE(m_series->count(), qMin(countLimit, m_modelColumnCount -  3 * removeCount - first));
 
-    m_hMapper->setFirst(0);
+    m_hMapper->setFirstColumn(0);
     QCOMPARE(m_series->count(), qMin(countLimit, m_modelColumnCount -  3 * removeCount));
 
-    m_hMapper->setCount(-1);
+    m_hMapper->setColumnCount(-1);
     QCOMPARE(m_series->count(), m_modelColumnCount -  3 * removeCount);
 }