Mine

  On *:text:!Changeworld *:*: { 
    if  ($nick isop #integrity-pc) && ($2 isnum 2-138) { set %world $2 
      msg # The world has been changed, type !world to view it 
    } 
  }
  On *:text:!world*:#integrity-pc: { 
    notice $nick Current World: %world 
  }