Post moved to a more suitable section of the forum (please read the descriptions to determine where best to post).
And it is a good idea to add your Archicad version and operating system to your signature in the 'Profile' link above as some answers can be dependent on your setup.
If you are conversant with GDL scripting you can open the object and amend the scripts.
Otherwise re-saving the object from amended elements is your best option.
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11