This will only work if you have some sort of pressure first on the lever. If you have changed lines then get some pressure first the old fashion way. My way is to break the seal on the rezzy cap. Leave it on though. Pull the lever to the bar as far as possible and zip tie or small bungee to the bars while you sleep or go to work or both. Come home loosen the strap tighten up the cap and you're done. For the rear wedge a hammer or crowbar between the pedal and frame. This is reverse bleeding. It will get 100% of all the air out and fix your mushy brakes. No mess, no fluid needed, and you don't need two guys. It's that simple.. Turn your bars so no fluid will drip on your plastic before starting or put a rag on your plastic just in case.