Kingdom Hearts 358/2 Days -- Mission 51 (Wonderland)

Hey,

Does anybody know how to get the last treasure in Mission 51? This is the mission where you have to defeat the several Pink Concertos hiding in flowers. The last treasure is by the Tea Party Garden. I've read some FAQ that says get onto the house and then glide over. But the glide doesn't seem to be able to reach that height. I've got glide lv2 and highjump lv1.
Can anybody help me please? Thanks!

Cheers~

EDIT: sorry I've caused a confusion...I realized that I wasn't suppose to get to the chest from the house but from another route. Could the moderator delete this post please? Thanks!