How to make client_win_api_environment.read_registry work on froms12c?

Hi,

May I ask how to make client_win_api_environment.read_registry of webutil work in Forms12c in PRE-FORM trigger?

I'm able to setup the webutil on the FMW server and am able to compile and run the webutil_demo fmb program and it is functioning well.

But when using coding it in PRE-FORM, its not getting any value.  The source form has attached webutil library and have subclass the webutil object group.

:global.local_branch := client_win_api_environment.read_registry ('HKEY_CURRENT_USER\Environment', 'LOCALBR', TRUE);

Does it have to do with timers and WHEN trigger expire in forms?  Really could use some working examples.