Landscape question, How do I change the physical material?

I’ve tried changing the physical material of the landscape and Im wondering if I’m doing something wrong or if it’s just bugged or something.

I have set it on Lava on both the landscape proxy and the landscape actor itself

And also on the sharedassets folder for the layers I have painted

If it worked correctly (or atleast what I hoped to be correct) I should be bounced around on ground being dealt damage, The lava physical material worked correctly on the normal props

This is not a lava material exclusive question it happens to all physical materials.