Those functions have nothing to do with multiplayer. They work in multiplayer, but only if server and client have the same handles, and that only happens when they have the same code.
As Sajeth said this is not possible with standard acknex multiplayer.
Take a look at the other topic you opened:
http://www.opserver.de/ubb7/ubbthreads.php?ubb=showflat&Number=334449#Post334449We have already given you ideas on how to do it with Anet or GSTnet.