Unable to login anonymously

I’m unable to login anonym once i get connected:

this._room.setRoomJID( “rum@conference.ack01” );

this._room.conferenceServer = “conference.ack01”;

this._room.nickname = “xname”;

this._room.setConnection( this._connection );

this._room.join();

i get an error response:

…<not-authorized…

i have setup the connection this way:

this._connection.server = “ack01”;

this._connection.useAnonymousLogin = true;

this._connection.connect( “standard” );

im able to connect, create and send messages to a room if i’m logged in but not anonym