Bug 210892 [Regression]The arguments of aggregation builder can not be modified
Description: [Regression]The arguments of aggregation builder can not be modified Build number: 2.3.0.v20071126-0800 Steps to reproduce: 1, New a table 2, Drag a aggregation builder into table 3, Specify the datafield, function to percentile and argument to 0.3 4, Reopen the aggregation and change the argument to 0.4 Expected result: After step4, the artument is changed to 0.4 Actual result: Nothing happened after step4, the argument is still 0.3 Error log:
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dialogs/BindingDialogHelper.java
private Combo cmbName;
	private boolean isCreate;
	private boolean isRef;
	public void createContent( Composite parent )
	{
		isCreate = getBinding( ) == null;
		isRef = getBindingHolder( ).getDataBindingType( ) == ReportItemHandle.DATABINDING_TYPE_REPORT_ITEM_REF;
		composite = parent;
		( (GridLayout) composite.getLayout( ) ).numColumns = 3;
		GridData gd = new GridData( GridData.FILL_BOTH );
		gd.widthHint = 380;
		if ( isAggregate( ) )
		{
			gd.heightHint = 320;
		}
		else
		{
			gd.heightHint = 150;
		}
		composite.setLayoutData( gd );
		new Label( composite, SWT.NONE ).setText( NAME );
		if ( isRef )
		{
			cmbName = new Combo( composite, SWT.BORDER | SWT.READ_ONLY );
			cmbName.setLayoutData( new GridData( GridData.FILL_HORIZONTAL
					| GridData.GRAB_HORIZONTAL ) );
			cmbName.addSelectionListener( new SelectionAdapter( ) {
				public void widgetSelected( SelectionEvent e )
				{
					String bindingName = cmbName.getItem( cmbName.getSelectionIndex( ) );