thanks for your reply, I'm working with KIX32 4.01.
The syntax I use (for test purposes) is:

if ingroup("dom-name\groupname") display "det.txt"

which should be correct according to the manual.

"det.txt" is displayed while I query a group in my login domain, i.e. in which my computer has an account, it does, however, not display, while I query a group in our second domain, in which I'm also a group member. The groups are global groups.

Regards,

Detlef