Hi @nickroz,
I have done an attempt to help in the below topic.
https://forum.dynamobim.com/t/nested-families-and-adding-parameters/15777/7
I couldn’t get the OOTB node “Document.Current” to work as you suggested above.
The custom node of the “Archi-lab_Grimshaw” package “Current Document” gave better results (not always stable).
I hope it can be of help.
Kind regards,
Mark