How can i change the /awayness auto nick ?

alias awayness {
  if ($away) { echo -a * You already set yourself away with the reason: $awaymsg }
  elseif ($1 == back) {
    away | ame is Back from : ( $+ $awaymsg $+ ) Gone For : ( $+ $duration($awaytime) $+ )
    nick Your-UNAWAY-Nick-Here
  }
  else { 
    nick Your-Away-Nick-Here | away Your-Away-Message-Here
    echo -a * You have set your away nick to: Your-Away-Nick-Here
  }
}

Replace Your-AWAY-Nick-Here, Your-UNAWAY-Nick-Here and Your-Away-Message-Here with one of your choices. The syntax is: /awayness <- this sets yourself away.
/awayness back <- this sets you back.