正确-您需要使用一个值转换器。

Correct - you need to use a Value Transformer.

在该转换器中，您应编写以下代码：

In the Transformer, you would code as follows:

itemDescription = Class.create(DC.ValueTransformer,{
    transformedValue: function(value){

    var itemDataSource = dashcode.getDataSource('itemsList'); // The Data Source Name here
    var lastName = itemDataSource.selection().valueForKey('lastName'); // Presumes you have a field called lastName
    return value + " " + lastName;
    }
});

希望这会有所帮助-我为此奋斗了一天！！！

Hope this helps - I battled with this for a day!!!