How do you get to the other side of the undernet zero in Megaman cybeast greger?

in undernet 1 as soon as u enter take a left and u see a block with a bone walk up and press a if u have rushfood which is an item u get in the shower comp in sky area 1 and it should let u threw and the passWord is 729 in undernet 1 as soon as u enter take a left and u see a block with a bone walk up and press a if u have rushfood which is an item u get in the shower comp in sky area 1 and it should let u threw and the passWord is 729