Matt,
Are these attribute values only for assemblies?
If yes, I’d suggest using the OIR to set values for attributes where you know the value before the object is created, such as “company_name”.
Other attributes that are driven from the objects data such as filename can be set automatically using a listener.
The listener would listen for the storing of the object and if the attributes are not the correct value then code would run to set the values per your spec.
I’d also set the UI such that the attributes cannot be edited from the UI by the user. Just let the code automatically set everything.
If you did implement a listener you could also use it to set attributes like “company_name” and not bother with doing it with the OIR.
Something to think about.
David
