Joshua Stops wearing diapers

Joshua stopped wearing diapers this year when i gave him a good caning. I have been asking him repeatly if he need to visit the toilet but he will tell me that he do has no 'water' to release. When he urinate, i got so angry that i cane him and punished him by telling him to stand at the spot where he did his business. Amazing, the next day, he started to tell us that he wanted to urine.