Attach Manager

Has anyone use Attach Manager of EXX to start natural RPC Server under Unix ? I am having a hard time trying to make exxatm work.
I want to execute the following comand
natural parm=NWWSRV >/dev/null </dev/null &
to start my service…
Everything looks fine. I can work with ACLASS/ASERVER/ASERVICE sample from Tester (sample on broker aci) but each time i want to reach RPC/NWWSRV/CALLNAT I receive a
“service not in service list”… and after that the Attach server goes down.

Any guest ?

Now I know what the problem was. Blank spaces after the name of the Server.