I agree that the error could very well be me though I tried many ways to get it working, like different locations in the dm.gsc - and/or _callbacksetup.gsc. I have been able to get other things working - like getting a player to drop their gun, when hit in the arm - for example. But again, this scripting business is not something I know much about, just by trial and error I usually get it working somehow.
Anyway, I am very thankful for the help you guys gave me on this one!