How do you get the treat out?

Dad, Eon and I got the backyard all securely fenced off so now the 'dancin dog' (my new name for her since I've seen how she walks on a lead!!!) can run around freely and safely. :)
This ball was just introduced to her the day before I arrived. All she did was bark at it! I put treats in it and set the timer (after a set time a bell will ring and it opens up a treat compartment so that if she plays with it the treats will fall out). She can smell them and tries to lick them out of the hole but she hasn't worked out to roll it yet! :)