You will need to update the current record first and then redirect to the add record form. You need to hope that your user does not get abducted by aliens and does have the opportunity to actually Add the record, since it will have been marked as added.
var text URLONE = URLRoot() & "db/" & dbid() & "?act=API_EditRecord&rid=" & [Record ID]
& "& "AppToken=xcxcxcxcxcxcxc" // if you have the need for application Tokens enabled
& "&_fid_99=" & urlencode("new value");
var text URLTWO =
URLRoot() & "db/" & [_DBID_RENEWALS] & "?a=API_GenAddRecordForm&_fid_108=" & URLEncode ([NAMEID])&"&_fid_9=Yes&_fid_6=" &[OID_Used_For_Key]& "&_fid_42=Pending&_fid_45=" & ToText(User()) & "&z=" & Rurl();
$URLONE
& "&rdr=" & URLEncode($URLTWO)
If there is any syntax errors that you cannot debug please post back with your formula and the error.
------------------------------
Mark Shnier (YQC)
Quick Base Solution Provider
Your Quick Base Coach
http://QuickBaseCoach.commark.shnier@gmail.com
------------------------------