Render target Pixel/VertexNormalWS to texture

Hi,
I’m trying to bake a wear curvature I made out from a pixelnormalws material function, I use it as a mask btween two texture but when I rendertarget to a texture only one of the texture shows, as if it renders as if it is not based from a complex mesh but a plane. I’m like trying to get a mix of those two:
https://forums.unrealengine.com/community/community-content-tools-and-tutorials/117666-free-curvature-shader

Thank you for any help.