Error node Element.GetParameterValueByName on level "negative"

[Yna_Db]

I don’t know personally, you could maybe find some kind of answer here:

Getting linked revit files Z value and levels to create views on host file

After a simple search on the forum you’ll find that part of this question has been answered already… There are quite a few nodes out there that get linked documents, then you can get the elements by category (in your case, the “Level” category). Once these have been retirieved you can get the “Elevation” parameter and “Name” parameter and then create new Levels in the current Revit document based on these parameter values. Beware to make sure the Level names are unique or you will not be abl…

I’ll let you know if I find something else…