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
{
					cmbActionType.select( 0 );
				}
				updateUI( trigger );
				switchUI( );
				lastTriggerType = cmbTriggerType.getText( );
			}
		} );
		Label lblActionType = new Label( this, SWT.NONE );
		GridData gdLBLActionType = new GridData( );
		gdLBLActionType.horizontalIndent = 4;
		lblActionType.setLayoutData( gdLBLActionType );
		lblActionType.setText( Messages.getString( "TriggerDataComposite.Lbl.Action" ) ); 
		cmbActionType = new Combo( this, SWT.DROP_DOWN | SWT.READ_ONLY );
		GridData gdCMBActionType = new GridData( GridData.FILL_HORIZONTAL );
		cmbActionType.setLayoutData( gdCMBActionType );
		cmbActionType.addSelectionListener( this );
		cmbActionType.setVisibleItemCount( 10 );
		grpValue = new Group( this, SWT.NONE );
		GridData gdGRPValue = new GridData( GridData.FILL_BOTH );
		gdGRPValue.horizontalSpan = 2;
		grpValue.setLayoutData( gdGRPValue );
		grpValue.setText( Messages.getString( "TriggerDataComposite.Lbl.ActionDetails" ) ); 
		grpValue.setLayout( slValues );
		
		cmpDefault = new Composite( grpValue, SWT.NONE );
		
		cmpCallback = new Composite( grpValue, SWT.NONE );
		cmpCallback.setLayout( new GridLayout( ) );
		addDescriptionLabel( cmpCallback,