You must be on a quarter or halfpipe to do this trick, it would also help if you cam kickturn very easily.
1. Set up going Fakie on a mini pipe approach the wall and start kick turning frontside.
2. You should already have done a 180 and have good balance on your back truck try to get the other 180 around and look for where you are going to land.
3. Land and keep your balance and roll to the other side. Good Luck!