So I am makinng a website that includes online courses, which will be for sell. I want to find a way to put limits or rules on how many courses or items you can add to your cart. it can be based on the amount of credits a student has or another factor.
I am using odoo 16, without creating a new module is there any way for me to do this?

Any help would be appreciated.

I tried writting a new record rule and making it work but that did not work what so ever.