> Has anyone actually been able to get this to work before?

I dont know if I've had anything exactly as you describe.
Specifically attempting to create your own master/detail using
AfterScroll, so I cant tell you if there are other problems with your
particular approach or not.

IB_Monitor output may at least help isolate problem.

Is there any reason why you can use MasterSource and MasterParamLinks
for this situation?

--
Geoff Worboys - TeamIBO
Telesis Computing