Ok, I made a cylinder and caped it then it becoms a func_group. But it must be a script_brushmodel how can I make it a script_brushmodel? I just get a error failed to create entity.

Or how can I cap a cylinder without making it a func_group? So it stays undifind brush and can be made into a script_brushmodel.

select all the pieces of the func_group press N and change the classname from

key classname
value func_group

to

key classname
value script_brushmodel

this will get you around the error

No, it din't help. The cylinders became script_brushmodel but I can't juse them in a script.

I dit it, I made the cylinder script_brushmodel then I caped it so the cap become undifined. I removed the script_brushmodel cylinder and made a new one then I selected the cylinder and the 2 caps and made them script_brushmodel now I can juse them in my script.