intervalRange.setEnabled( intervalType.getSelectionIndex( ) != 0 );
ExpressionBuilder expressionBuilder = new ExpressionBuilder( getKeyExpression( ) ); expressionBuilder.setExpressionProvier( new ExpressionProvider( dataSetList ) );  if ( expressionBuilder.open( ) == OK ) { setKeyExpression( expressionBuilder.getResult( ).trim( ) ); }
			public void widgetSelected( SelectionEvent e )			{				intervalRange.setEnabled( intervalType.getSelectionIndex( ) != 0 );			}