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.ui.extension/src/org/eclipse/birt/chart/ui/swt/composites/TriggerDataComposite.java
String sExpr = wizardContext.getUIServiceProvider( )
						.invoke( getExpressionBuilderCommand( ),
								txtTooltipText.getText( ),
								wizardContext.getExtendedItem( ),
								null );
				txtTooltipText.setText( sExpr );
			}
			catch ( ChartException e1 )
			{
				WizardBase.displayException( e1 );
			}
		}
		else if ( e.getSource( ).equals( btnScriptExpBuilder ) )
		{
			try
			{
				String sExpr = wizardContext.getUIServiceProvider( )
						.invoke( getExpressionBuilderCommand( ),
								txtScript.getText( ),
								wizardContext.getExtendedItem( ),
								null );
				txtScript.setText( sExpr );
			}
			catch ( ChartException e1 )
			{
				WizardBase.displayException( e1 );
			}
		}
	}
	/*