just paste it into alias and type /imaway to be away then /imback to return

imaway {
  set %meisaway yup
  if (%meisaway = $null) {
    amsg 11[4AMSG11] 11[4Away11] 11[4Reason11]14,1 $1- 11,0[4Left-At11]112 $time
    away $1-
  }    
  else {
    echo your already away idiot
  }
}

imback {
  if (%meisaway != $null) {
    away
    amsg 11[4AMSG11] 11[4Back-From11]4 $awaymsg 11[4Gone-for11]112 $duration($awaytime)
  }
  else {
    echo you are not away idiot
  }
}