I can't climb the ropes in Gym because of hyperhidrosis?

Well,everyone in my cl in Gym tomorrow is going to climb the ropes that my gym teacher was nice enough to take down for us to climb up.Unfortunately,I can't climb the ropes.This is because I have what is called Palmer Hyperhidrosis(it just means my hands sweat more than the average person) so I can't really grip onto many things,like video game controllers like XBox and PS3 and etc.But ESPECIALLY not ropes,I have tried to climb up the ropes before,and I have fallen flat on my back,about 20 feet down .I can't wear gloves or anything,school won't allow it.What can I do during gym instead?(it wasn't mandatory to climb the ropes,but yet everyone wanted to climb them)Please help.