J.C.
What worked for me was putting my boys in underwear. Being wet in a diaper and we in undies is very different. With each of them the first day we had a lot of accidence, my oldest wanted his pull up back badly, but I said no, once a big boy you do not go back to being a baby. The second day we had 2 accidents, and than one every couple of days, and so one and so forth. But you have to be willing to stick to it once you start, because if you keep going back and forth they will learn that if they do not want to try all they have to do is pee in their pants a few times and you will give in.