Terrain Tesselation Not Working

Hello everyone. I’ve been trying to get my terrain to tessellate and I’ve not been having a lot of luck.

I downloaded a free substance and created a material, then I plugged it into my terrain. The terrain does not tessellation properly - in fact, raising the tessellation amount to a very high amount such as 100 just raises the squares of terrain slightly to varying heights.
I’m at a complete loss as to why this is happening. All I want is my terrain to tessellate into mud and rocks.

I should add that I have only a basic idea what I am doing. I don’t know why I’m multiplying constant values and I don’t know what the VertextNormalWS node is for.

95104-picture2.png

][2]

Thank you for any help.