I am very new to unreal engine, so i apologize if this turns out to be a very simple fix, but i just cant seem to find any information on how to work around the particular issue i am facing. I am trying to incorporate the orbit weather and seasons pack into my project which is using brushify for painting the terrain. Orbit uses a material function to apply a wet look or snow to the landscape, and its this material function that is where im getting my issue. when i plug the diffuse, normals, and displacement into the orbit material function, it works just fine, but when i plug the roughness into it, i get the error “[SM5] Function MF_SnowRain: (Node LinearInterpolate) Arithmetic between types float and float3 are undefined”
https://forums.unrealengine.com/filedata/fetch?filedataid=183392&type=thumb&attachmentnodeid=
https://forums.unrealengine.com/filedata/fetch?filedataid=183393&type=thumb&attachmentnodeid=
Any help would be very appreciated, i am just starting to learn unreal engine and am not very proficient yet, thank you