Can't start a transaction in FamilyDocument?

[philip_bloudoff]

For anyone in the future, here is a topic that somewhat describes my question:

Change Revit.Application.Document to Document

Also, Rhythm has been refactored to work with all Document types as well (including Orchid). The types are: Revit.Application.Document (Dynamo internal type) Autodesk.Revit.DB.Document (Internal Autodesk Database Type) Here is a sample of how it is handled in the code with Rhythm: This was the result of a pretty cool collaboration with the author of Orchid and I: