読み取り専用。文書が作成された日付/時刻です。
var today:NotesDateTime = session.createDateTime("Today");
today.setNow();
var created:NotesDateTime = currentDocument.getDocument().getCreated();
var diff = (today.timeDifference(created) / 86400).toFixed(0);
return "This document was created " + diff + " days ago.";