Have you ever seen this problem using Element in Room node from archi-lab?
The LinkElement you’re getting from LinkElement.OfCategory is a custom class from Bimorph. It’s a wrapper around the Revit element (the Room in your case) and not the actual element. So other nodes typically can’t interact with it. You’ll need to use LinkElement.Element to unwrap the room.
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Can you confirm that the bimorph node is returning the actual Revit object? I know the output says LinkElement but that should be a misprint.
Good. You may have unplaced rooms then. You can either check within a room schedule or check for rooms with no area. Archilab also has a node specifically for linked rooms, Elements from Linked File in Room. You might try that instead. Or you could use the point method with Room.IsInsideRoom.
