Help: 3-d studio max issue...

[oorosco]

Okay so i was doing the Realistic hourglass tutorial and i got to editing my snow emitter, and the problem that i ran into was that even though i assign a udeflector to it (to stop the "sand" from going through the bottom part of the hourglass) it still goes through. Why would this be true, if i click on snow where you see its list of modifiers you see a lightbulb with gravity and deflector assigned to it, everyone in my class says that it should be working but my teacher being cruel refuses to help saying randoms tuff which generally stands for "i have no clue"

Thanks ahead of time!

View attachment screenshot.bmp