It's simple...when you're in your profile you can se the total amount of events completed...for example, I have 17290 events completed out of 17876 total available events.
Now, if I use the autowin script on 10 events/races, then the number in my profile should increase by 10, so then I would have had to have 17300 completed events. If I see, that the number of events hasn't increased as expected, then it's wise to reload a previously saved game and repeat the autowin for the events.
Hope, that helps to clear up the confusion...