12.3.0.601 is X1 3.1 SP3 - as can be found here:
I believe there is something with this build that prevents the mechanism you’re trying to institute from working, as so far you’re the fourth person I’ve heard from who can’t make it work, and the commonality is version 12.3.0.601.
So apologies - I guess the only solution would be to upgrade to a later service pack or fix pack - but I can’t tell you which version to opt for - needs a poll really to see who has instituted this mechanism, and what version(s) they use?
HTH
NMG
mcnelson (BOB member since 2008-10-09)