I already solve this problem
it was a little bit complicated
I insert to my "script" by cookies physical path
next argument is command (MKD <new dir>).
Than I open dir from cookies and check for "new" dir,
BUT
sometimes it works and sometimes doesn't
The problem was, that when someone upload more dirs at once
(more dirs in queue) he always was not in dir where he want makes it.
So now I have to ask ioftpd where is the user's vfsfile
and find out physical dir correspond to virtual dir
Miky