Windchill REST Services - using custom entity

Hi,

I created custom entity, with custom attribute:

Now I can retrieve the attribute by $select.

The issue is, I cannot get selected attribute from object 'Revisions', e.g.:

"/CADDocumentMgmt/LWECADDocuments?$expand=Revisions($select=DESCRIPTIONLONG)"

How can I change the inherited navigation property type? I tried to add "versioned" in "inherits" but without any results.