Add parameters so they can set customize the part.
If you correctly define the subtype first, those parameters will be added. Then use the GS names of these parameters in your script.
Erika
Architect, Consultant
MacBook Pro Retina, 15-inch Yosemite 2.8 GHz Intel Core i7 16 GB 1600 MHz DDR3
Mac OSX 10.11.1
AC5-18
Onuma System
"Implementing Successful Building Information Modeling"