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 void createAggregateSection( Composite composite )
	{
		new Label( composite, SWT.NONE ).setText( FUNCTION );
		cmbFunction = new Combo( composite, SWT.BORDER | SWT.READ_ONLY );
		cmbFunction.setLayoutData( new GridData( GridData.FILL_HORIZONTAL
				| GridData.GRAB_HORIZONTAL ) );
		WidgetUtil.createGridPlaceholder( composite, 1, false );
		cmbFunction.addSelectionListener( new SelectionAdapter( ) {
			public void widgetSelected( SelectionEvent e )
			{
				handleFunctionSelectEvent( );
				validate( );
			}
		} );
		new Label( composite, SWT.NONE ).setText( DATA_FIELD );
		cmbDataField = new Combo( composite, SWT.BORDER );
		cmbDataField.setLayoutData( new GridData( GridData.FILL_HORIZONTAL
				| GridData.GRAB_HORIZONTAL ) );
		createExpressionButton( composite, cmbDataField );
		cmbDataField.addModifyListener( new ModifyListener( ) {
			public void modifyText( ModifyEvent e )
			{
				validate( );
			}
		} );
		cmbDataField.addSelectionListener( new SelectionAdapter( ) {
			public void widgetSelected( SelectionEvent e )
			{
				String expr = getColumnBindingExpressionByName( cmbDataField.getText( ) );