on *:text:!setworld*:#:{
  if ($nick isop $chan) || ($nick ishop $chan) {
    if ($2 isnum 1-138) {
      set %world $2
      msg $chan the world is now: $2
    }
  }
}

on *:text:!world:#:{
  if (%world != $null) {
   notice $nick the current pc world is: %world
  }
}