Bug 198031 Legend interactivity does not work correctly for drill-throughs
Under Value (Y) Series enable interactivity for the event "Mouse Click" Set action to Hyperlink The type of the hyperlink is Drill-through and the target is the a sub-report Pass parameter to sub-report as row["value_of_the_legend_item"] Suppose there are 3 values, x,y and z No matter which legend item you click (x, y or z), z gets passed as param to the subreport
chart/org.eclipse.birt.chart.reportitem.ui/src/org/eclipse/birt/chart/reportitem/ui/ChartReportItemBuilderImpl.java
crii,
						cm,
						(Chart) applyData[0],
						(String) applyData[1] );
				return Window.OK;
			}
			commandStack.rollback( );
			return Window.CANCEL;
		}
		catch ( Exception e )
		{
			throw new RuntimeException( e );
		}
		finally
		{
			iInstanceCount--;
			
			
			this.extendedHandle = null;
		}
	}
	private void updateModel( ExtendedItemHandle eih, ChartWizard chartBuilder,
			ChartReportItemImpl crii, Chart cmOld, Chart cmNew,
			String outputFormat )
	{
		try
		{
			
			eih.setProperty( "outputFormat", outputFormat );