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
for ( Iterator iterator = getBindingHolder( ).getDataBindingReference( )
							.getColumnBindings( )
							.iterator( ); iterator.hasNext( ); )
					{
						ComputedColumnHandle computedColumn = (ComputedColumnHandle) iterator.next( );
						if ( computedColumn.getName( ).equals( bindingName ) )
						{
							setBinding( computedColumn );
							initDialog( );
							return;
						}
					}
				}
			} );
		}
		else
		{
			txtName = new Text( composite, SWT.BORDER );
			txtName.setLayoutData( new GridData( GridData.FILL_HORIZONTAL
					| GridData.GRAB_HORIZONTAL ) );
			txtName.addModifyListener( new ModifyListener( ) {
				public void modifyText( ModifyEvent e )
				{
					validate( );
				}
			} );
		}
		WidgetUtil.createGridPlaceholder( composite, 1, false );
		new Label( composite, SWT.NONE ).setText( DISPLAY_NAME );
		txtDisplayName = new Text( composite, SWT.BORDER );