Timberwatch

I am working with a friend to create some food items for an RP sim. I would like to be able to create a script that gives out food in limited quantities for realism. For instance a sandwhich would only give out 5 of them and then would not allow for anymore. I have a giver script but I am struggling with how to make it so it only gives out the limited quantity. Any one have a suggestion? Or know of one that I can buy that is already out there? Thanks!