i like to control the the height depending on the mask , something like
Not sure why the node in the pic accept the lerp but the one we have now is different and doesn’t accept the lerp , may be the one in the pic is custom material function , but anyway i like to make a seamless grass/ carpet effect that have different height on some areas , in different word i like to add a mask to the height map that i use for MOP.
something like

