Flick the lever. Just do it. It isn't that hard. Now flick that lever and stop reading the instructions. Seriously. flick the lever. FLICK THE LEVER RIGHT NOW. JUST FLICK THE LEVER ALREADY. Have you flicked the lever yet? Good. (By the way, if the wheels get messed up and detach from the box, press [R] to reset the box.)
Made by Yxder. Also press the flag before flicking the lever.