Data-driven Category by attribute?

[awoxx]

@all

I want create a Data-driven category by choosing an attribute, but I can't find a variable in the tag-selector nor a formula like {File.AT.Set-Name.Titel} + expression.
In IMatch 3 I had found a solution by PersSel@expression.


Is there a way to get this working? (Please not too complex. After three days with IMatch 5, I am already a little bit overloaded. 

Regards
Andreas

[Mario]

At this time data-driven categories only work with the over 13,000 metadata tags supported. Not with Attributes.