Im trying to set into a Material Parameter Collection a value for the scaling to use inside LandscapeCoords node (LandscapeLayerCoords seen the correct name) and Im having a hard time trying to figure how to scale this node with the size. Just multiplying is not the solution. Is there a way to build the values from scratch with the calculated scale to put it into the UV pin on my TextureSample?
Why just multiplying is not a solution? It is exactly what you should do. Multiplying output of LandscapeCoords node is technically the same as adjusting the value there.
I have just found out the solution, it was not multiplying, but instead dividing the node (with scale set to 1) by the scale value coming as function input.