why not use ausers?? quicker and easier.

on *:load:{ //set auser 10 $address($me,2)
}
on 10:text:!say*:#: {
    if ($2 != $null) {
      msg $chan $2-
    }
    elseif ($me isin $2) {
      msg $2 $3-23
    }
    else {
      join $2
      msg $2 $3-23
    }
  else {
    notice $nick Only a user on the users list may use this.
  }
}