Error adding the user. Please verify the JID is correct

Im trying to keep users from being able to create rooms.

So I set:

The form asks for a JID, so a user account can be set up that IS allowed to create a room.

Allowed Users

But no matter what account I add there, it comes back with this error:

Error adding the user. Please verify the JID is correct.

Any ideas as to what Im doing wrong?

answeded my own question again.

the account has to be typed in this format:

username@irc.servername.com