Post OFS from Auth Routine R10 Browser

Hi guys,
I'm trying to post an OFS Message from a Auth Routine in R10 (Browser).
the routine runs fine when I run it from the jsh, but doesn't not work when ran from T24.
Can you please give me some guidance about how to do it? If it's not possible at authorization time, how can we do it during COB?

below the relevant part of my code.
Thanks i advance.

SUBROUTINE MM.CONF.RTN
$INSERT I_COMMON
$INSERT I_EQUATE
$INSERT I_F.MM.MONEY.MARKET
$INSERT I_F.OFS.SOURCE

GOSUB
...
GOSUB POST.OFS.MSG

INITIALISE:
...
...
...
POST.OFS.MSG:
OFS.MSG.ID = ''
CALL OFS.POST.MESSAGE(Y.OFS.MSG, OFS.MSG.ID, 'TEST', '')
CALL JOURNAL.UPDATE(SYSTEM(40))
RETURN

Yep