I have used it several times.  It usually starts - but it takes a while,
maybe 2-5 minutes.
(Has to be prompted mode, of course. Are you using polling? )

I turned on tracing once to try and see why it would not start immediately.
I found that there was a 30-second timing loop in the server - but could
never figure out why it took two+ minutes.

I HAVE seen, very reliably, that if a schedule is pending and you restart
the CLIENT process( e.g. dsmc sched), the schedule starts immediately.

Anybody know more?