About model and data exchange with 3rd party solutions: Revit, Solibri, dRofus, Bluebeam, structural analysis solutions, and IFC, BCF and DXF/DWG-based exchange, etc.
I'm trying to get the perimeter of the room in my interactive schedule but without the width of doors.
I have found this thread: http://archicad-talk.graphisoft.com/viewtopic.php?p=174371
Basically I think I need to create new parameter and put simple calculation ROOM_NET_PERIMETER - ROOM_DOORS_WID. But I have no idea where to change the sript of zone stamp. Could anyone point me to some tutorial or help me on that?
You should be able to select an instance o the the zone stamp and go to File > Libraries > Open Library Part (command+option+O). You should save your custom stamp under a different name. If the one you are using is a default part it may be locked in which case you will have to do this anyway. You will then need to assign the new part in your zone definitions.