Using the SHIFT key during a screen recording

For anyone who happens to read this, it doesn't seem as though there's a workaround for evaluating whether a user has depressed the SHIFT key when they click an area or not. It sounds like a best practice is to use hotspots for the first and last item in a range and hope that they're actually depressing the SHIFT key while they're clicking the hotspots. For my purposes, I'll probably prompt the user to depress the SHIFT key after the first click and before their next click (even though I won't be able to evaluate whether they have or not).