Use your words

Alex is addicted to fruit snacks. He comes in, points at the pantry, and grunts. We are trying to get him to use his words and tell us what he wants. Tonight I refused to get him anything until he told me. He climbed on top of me, hit me, whined and I kept saying, "Tell mommy what you want, use your words" etc. About 5 minutes into it, he just stopped whining and walked out of the room to go play.