Food Cap

I have read all the topics I found with the search function, but none of the stuff I learned there really solved my problem.

How do I set a food cap for my map to 70?

It is currently stuck at 40 and I can't get passed it? I tried Player - Add/Set Food Cap for Player(1) to 70, but that doesn't help me as the food cap can't get passed the number 40. What am I doing wrong? I try to set the value at Map Init. Is there a different way to do this?

look at gameplay constants, it must be there

OK, I found and changed the Game Constant 'Food Limit'. Does this mean I can change the food cap through the trigger only up to the value specified in the Game Constant menu? Is that how it works?

Yup exactly :D