UIUtil.bindHelp( parent,IHelpContextIds.EXPRESSION_BUILDER_ID );
	protected Control createDialogArea( Composite parent )	{		Composite composite = (Composite) super.createDialogArea( parent );		createToolbar( composite );		createExpressionField( composite );		if ( provider == null )		{			provider = new ExpressionProvider( );		}		createOperatorsBar( composite );		createMessageLine( composite );		createListArea( composite );		return composite;	}