I'm using the latest version scheduler from r525. You don't need to input in cron syntax. I was hoping the time range, in my case 10:17pm to 10:43pm, would act like the security feature of HomeSeer. ie, A10 would be turned off only once at some random point within this range. This would give the appearance someone was home because the light doesn't go out at the exact same time each night. This event is my vacation setting and A10 OFF activates a wizard script that turns lights off in a sequence that gives the appearance you're walking around shutting lights off to go to bed.
If it's as you describe in the post above, I can't see much usefulness for this feature.