Help pls

[Faon]

Hello i am trying to do some scripts but i am noob at it so if u could help me pls, i want so display a messagebox and spawn some creatures on the map after hero enters region, but when he does, the game only sleeps then does nothing , the creature is not spawned and the message box dose not pop up, where i am making fault please? here is the script :

Trigger(REGION_ENTER_AND_STOP_TRIGGER,"noway","noway");
function noway ()
if GetCurrentPlayer () == PLAYER_1 then sleep(5);
MessageBox("Maps\SingleMissions\Petty Squabbles\pred.txt");
CreateMonster("Gandalf",CREATURE_BALOR,350,83,43,0,MONSTER_MOOD_WILD,MONSTER_COURAGE_ALWAYS_FIGHT,3.14159);
Trigger(REGION_ENTER_AND_STOP_TRIGGER,"noway",nil);
end;
end;
Thanks for help