in this package there is a custom node listed above
i made this script using it
why when i change level or change wall type its “delete” the area reinforcement from those picked earlier
why is update switch removes the area already made?
Not sure what you’re asking, but if sounds like you need to commit the elements into the Revit document. If I am right there are several ways to do this: running the script in Dynamo player, undoing in Revit between runs, or utilizing a transactions to force each run to be unique. My favorite method is Dynamo player, but everyone’s preference is different.