Min/Max for Certain Products

Using the Min/May Quantities by BeRocket, I am having trouble setting it up. I want all products to be a max of 5 can be added to the cart except for a small product variation to be max of 10 in the cart. So I mean I can have any of the products can be added but only a total of 5 in the cart. One small product can be added but only 10 max along with 5 of the other size products. For some reason, customers will still be able to checkout when they have gone beyond the max quantities. How do I set this up correctly?

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