GA and nonlinear constraints stopping criteria

Hi, I'm having some trouble with ga. without nonlinear constraints, I seem to have direct control of the stopping criteria; I can set number of generations, stallgenlimit, tolFun, etc. However, when I use nonlinear constraints, it is not transparent how to control the number of iterations. For instance, ga will often quit after only 3 populations, telling me that my stopping criteria have been met. I understand that the way it handles inner and outer problems are different, but how might I FORCE ga to do, say, 10 outer generations?