Kingdom Hearts DS

Im not sure if anyone is this far yet, but I think im on day 70 something so dont read further if u dont wanna spoil anything, but im at the part where axel and roxas are looking for xion, and pence says to look at the "8th Wonder". which is the tree in the woods. which tree am i supposed to strike, because nothing is happening, and i no an event is supposed to occur in here, so what do i do?

just keep striking the trees

It's the tree with its leaves falling off.

ok i got it. I ended up having to jump and strike, instead of just standing and striking. Which was dumb, but regardless, i got it.