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
Shell parentShell = null;
			if ( PlatformUI.isWorkbenchRunning( ) )
			{
				parentShell = PlatformUI.getWorkbench( )
						.getDisplay( )
						.getActiveShell( );
			}
			final ChartWizard chartBuilder = new ChartWizard( parentShell );
			final ChartWizardContext context = new ChartWizardContext( cmClone );
			chartBuilder.addCustomButton( new ApplyButtonHandler( chartBuilder ) {
				public void run( )
				{
					super.run( );
					
					applyData[0] = EcoreUtil.copy( context.getModel( ) );
					applyData[1] = context.getOutputFormat( );
					commandStack.commit( );
					commandStack.startTrans( TRANS_NAME );
				}
			} );
			context.setUIServiceProvider( this );
			context.setDataServiceProvider( new ReportDataServiceProvider( eih ) );
			context.setRtL( ReportItemUIUtil.isRtl( ) );
			Object of = eih.getProperty( "outputFormat" ); 
			if ( of instanceof String )
			{
				
				
				if ( of.equals( "GIF" ) )