You don't need to alter the script to add Listing Parameters.  You can either add new parameters via the Parameter screen of the GDL dialog, or rename the existing listing parameters.
You need to do this for each door object (a lot of work) or the associated Subtype (although this later option requires you to reassociate the door object with the subtype, changing other parameters that may then need to be reset -- not recommended unless you know what you're doing).
					
				
			
			
				
	MacBook Pro Apple M2 Max, 96 GB of RAM
AC27 US (5003) on Mac OS Ventura 13.6.2
Started on AC4.0 in 91/92/93; full-time user since AC8.1 in 2004