Kingdom Hearts 1, 100 Acre Woods Help?

I'm a super noob and I'm stuck on a 100 acre woods page. Basically, I defeated Yuffie and Leon in the Olympus Coliseum, Finished Atlantica, Halloween Town and the Whale worlds, and all the previous ones. I don't know about Traverse Town though, if I'm supposed to do something in specific? I've been looking up this for help and it says that I need to go to the 100 acre woods and go into Pooh's Swing place, but when I walk over it, nothing happens. Can someone tell me what I'm doing wrong?