The picture is from the Type Properties of a door type.
How can I change the value of the “Type Omramming” parameter in a project?
The values in this parameter are nested families.
The picture is from the Type Properties of a door type.
How can I change the value of the “Type Omramming” parameter in a project?
The values in this parameter are nested families.
I’m going off memory here. But I’m pretty sure you need to use the Parameter.Set(ElementId) method. I’m not sitting at place where I have Revit in front of me, so I can’t use Revit Lookup. But I’m pretty sure you can construct an ElementId object from the type id’s of your nested families. I’m not sure if they have to be shared or not though.
Use the below method to retrieve the available values that can be assigned to the < Family Type > parameter.
Thank you! 
It works now!