Mine

alias adduser {
  if ($left($1,1) == $chr(64)) {
    if ($2) { 
      var %b = *!* [ $+ [ $1 ] ]
      write BlackList.txt %b
      write BlackListReason.txt $2-
      echo -ta [4 Blacklist ] Successfully written04 %b to blacklist. Reason:04 $$iif($2,$2-,Unspecified) $+ .
      } else {
      var %b = *!* [ $+ [ $1 ] ]
      write BlackList.txt %b
      write BlackListReason.txt Null
      echo -ta [4 Blacklist ] Successfully written04 %b to blacklist. No reason specified.
    }
  }
}