Mine

on *:TEXT:!changeworld*:#: { 
  if ($nick isop $chan) || ($nick ishalfop $chan) {
    if ($2 isnum 1-132) {
        set %world $2 
        msg $chan the world has been changed type !world to view it
      } 
    }
  }

  on *:text:!world*:#: {
  notice $nick The current world is %world . }