datafield with none item

src/com/fr/plugin/demo/DemoTableDataPane.java

@@ -4,6 +4,8 @@ import com.fr.design.gui.icombobox.UIComboBox;
 import com.fr.design.gui.itextfield.UITextField;
 import com.fr.design.mainframe.chart.gui.data.CalculateComboBox;
 import com.fr.extended.chart.AbstractExtendedChartTableDataPane;
+import com.fr.extended.chart.ExtendedCustomFieldComboBoxPane;
+import com.fr.extended.chart.UIComboBoxWithNone;
 
 import java.awt.Component;
 
@@ -21,9 +23,11 @@ public class DemoTableDataPane extends AbstractExtendedChartTableDataPane<DemoDa
     private UIComboBox actual;
     private CalculateComboBox actualFunction;
 
+   // private UIComboBoxWithNone seriesName;
+
     @Override
-    protected boolean hasCustomFieldPane() {
-        return true;
+    protected ExtendedCustomFieldComboBoxPane createExtendedCustomFieldComboBoxPane() {
+        return new ExtendedCustomFieldComboBoxPane();
     }
 
     @Override