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
paramBindingTable = new TableViewer( parent, SWT.BORDER
				| SWT.SINGLE
				| SWT.FULL_SELECTION );
		Table table = paramBindingTable.getTable( );
		GridData gd = new GridData( GridData.FILL_BOTH );
		gd.horizontalSpan = 2;
		gd.heightHint = 60;
		table.setLayoutData( gd );
		table.setLinesVisible( true );
		table.setHeaderVisible( true );
		TableColumn parameterColumn = new TableColumn( table, SWT.LEFT );
		parameterColumn.setText( COLUMN_PARAMETER );
		parameterColumn.setResizable( true );
		parameterColumn.setWidth( 100 );
		parameterColumn = new TableColumn( table, SWT.CENTER );
		parameterColumn.setText( COLUMN_REQUIRED );
		parameterColumn.setResizable( true );
		parameterColumn.setWidth( 55 );
		TableColumn valueColumn = new TableColumn( table, SWT.LEFT );
		valueColumn.setText( COLUMN_VALUE );
		valueColumn.setResizable( true );
		valueColumn.setWidth( 180 );
		table.addKeyListener( new KeyAdapter( ) {
			/**
			 * @see org.eclipse.swt.events.KeyAdapter#keyReleased(org.eclipse.swt.events.KeyEvent)
			 */
			public void keyReleased( KeyEvent e )
			{
				
				if ( e.keyCode == SWT.DEL )