you could do it like this as well
just a diff take on it..

on *:input:*:{
  if ($nick(#,$me,oh) && $1-2 == /me kicks) {
    if (!$3 || $4) { 
      echo -a $iif(!$3,Woops! You forgot to specify a nick to kick,sorry $+ $chr(44)$&
        if you wanted to kick someone $+ $chr(44) you shouldn't include anything after their nick) 
      haltdef 
    }     
    elseif ($3 ison #) { 
      .timer.action.kick -m 1 500 kick # $3 You just got kicked :D 
    }
    else { 
      echo -a Woops! That person is not in this channel
      haltdef
    }
  }
}