Bug 147604 Value in parameter list displays incorrectly with paramter group
Steps to reproduce: 1.Add a parameter group "pg" in report1, add a parameter"p" in the group 2.Add a label in report2, set a drill-through hyperlink, set target report is "report1", click parameter Expected result: Only one "p" lists in the value list Actual result: Two "p" appear
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/HyperlinkBuilder.java
displayArea.setLayout( new FillLayout( ) );
		final ScrolledComposite scrolledContainer = new ScrolledComposite( displayArea,
				SWT.H_SCROLL | SWT.V_SCROLL );
		final Composite container = new Composite( scrolledContainer, SWT.NONE );
		container.setLayout( new GridLayout( ) );
		scrolledContainer.setContent( container );
		messageLine = new CLabel( container, SWT.NONE );
		messageLine.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		createDrillthroughSelectTargetReport( container );
		createDrillthroughSelectTargetAnchor( container );
		createDrillthroughCreateLinkExpression( container );
		createDrillthroughSelectShowTarget( container );
		createDrillthroughSelectFormat( container );
		container.setSize( container.computeSize( SWT.DEFAULT, SWT.DEFAULT ) );
	}
	private void createDrillthroughSelectTargetReport( Composite container )
	{
		targetGroup = new Group( container, SWT.NONE );
		targetGroup.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );