help xml-ifying a script attribute definition ?

[Tom Zeller]

> within a ValueMap:
> if (sourceAttributeID matches any SourceValue)
>  return ReturnValue
> else
>  return DefaultValue

I would like the ReturnValue to be SomeAttribute.getValues(), not a
string, where SomeAttribute is not the attribute identified by
sourceAttributeID. Does that make sense ? I know, it is weird.

Something like

 <ReturnValue>SomeAttributeID</ReturnValue>

or

 <ReturnValue>SomeAttributeID.getValues()</ReturnValue>

I think that would be custom code.

Thanks.