It turns out it wasn’t designed to be used by library parts.
When AC_BackReferenceGUIDList is used in a special autotext – “
That is the only possible use of it, single GUID’s can’t be written as autotext.
The user can select the referenced drawings after clicking Back Reference button in the drawing settings dialog on the Title tab. Theoretically you could filter AC_BackReferenceGUIDList in the parameter script, but that would interfere with this dialog.
Library Platform, Software Engineer