Forums Scripts & Popups not working

 
alias spamdetect {
  var %a = $comchan($1,0)
  while (%a > 0) {
    if ($me isop $comchan($1,%a)) {
      ban -ku3600 $comchan($1,%a) $1 14Private Offensive Language 
    }
    dec %a
  } 
}