ASAP HELPUnity Engine Physics is required access non static member!!!

Ok, so i have a ball game where you roll a marble around obstacles. I made it 1 year ago. I went back to it recently and i get the 'An instance of type UnityEngine.PhysicsMaterial is required to access non static member bounciness. Line 101. At First it started like this:

collider.material.bouncyness = 0.5;

I got the error listing many different scripts saying that UnityEngine.PhysicMaterial.bouncyness is obsolete. Use PhysicMaterial.bounciness instead.

So I changed it into:
PhysicMaterial.bounciness = 0.5;

That took away all the errors on the other scrip but on the debugging console it only shows that script with the ‘An instance’ error!It was working fine a year ago! Is it an update? What did i do wrong?

The suggested correction wasn’t telling you to use it as a static member, it was just telling you what the correct name was! Just do this:

collider.material.bounciness = 0.5;

You still need an instance reference- PhysicMaterial.bounciness is the name of the variable in the class, but it can’t predict what your specific object will be called.