Potty Training an Older Child?

I have a 6 year old boy who refuses to poop on the potty, he will pee in it just fine. When it comes to pooping he will hide and go in his pants. I have tried everything from bribery, taking favorite things away, time out, candy, money, toys, cleaning himself up, and washing out his underwear. I have tried gating him in the bathroom, making him sit on it after school, and talking to his DR.

My Dr. said everything I have tried should have worked. He normally doesn't do it at school. I am at my wits end. He will go if he wants something, but after he gets it he will poop in his pants. He will push a little out in the toilet and as soon as he sees you are busy he will go hide and do it in his underwear. He will do it in the bathroom in front of the toilet, but not in it. If anyone could please help me, I will be very happy. Thank you.

By stacey Ruggero from Ludington, MI