I have tried this code but does not seem to make any difference. Am using Brine 7.0 if that matters.
I understand the user can change in the final checkout section ; and am ok with that I just want to limit the quantity of an item allowed in a cart.
Do I insert the code under the product page, additional info, javascript?
I tried that as well as Page Header Code Injection for the store page but neither seemed to do anything.