This script applies a number or letter before and after a door tag. It changes the mark of the door to accomplish this. I am hoping to create the script so that the tag numbers the doors based off of the rooms and also adds a different numbers for each door. For instance room 400 in Revit has four doors. The script needs to number one door D400A the second door D400B the third door D400C and so on.
Attached is a picture of the script.