I see no one won this level either. B can drop the ball but can't get down to follow the ball? Got me?
@gmacpro you are right as always A ball is in a part of the path that R passes through it.You must drop R down through the hidden room and movable section inside it.It's easy to move through the roof and Moving this move down is possible.(By slider) I had to give this point in the explanation as you said:me and my hidden stuff