How to get access to the Collision of a Physics asset from a BluePrint? Look at the screen below

Hello, i’m searching for a long time now, how to get access to this Collision section in a Physics Asset. What i want to do, is to be able, inside a blueprint, to put the collision of a specific Bone, to Collision Disable instead of Enable. At start it’s Enable, but i want to be able to Disable it while Playing.

I can’t get access to it from a blueprint! I can get access to the collision of my Mesh, but this is not what i want!

I want to get access to the collision of a specific Bone, as shown on the screenshot.

Thank you for the help, if someone have an idea!