on *:TEXT:!setcw *:#castlewars:{
  if ($nick isop #) || ($nick ishop #) && ($$2 isnum) {
    set %cw $2-
    msg #cw cw world has been changed, !cw for new world 
    else { halt }
  }
}

on *:TEXT:!cw:#castlewars:{
  notice $nick The current world  is %cw $+ .
}