Hello all, I am a new Dynamo user so forgive me as I am posting with some little knowledge about dynamo.
Following different posts here, I was able to put together a definition that finds and opens many of Revit central files at the same time from a certain folder. Then using the Rhythm package I was able to Open and Close the files.
But I am unable to execute and set the value of the “Mark” parameter for all the “Wall” elements inside all the opened files.
as far as I know, you cannot use Application.OpenDocumentFile on opened documents. Try open a blank project and close all the files that needed to be edited then run your script. I think it will work perfectly.