I’m looking for the same as well!! I’m stuck for weeks now going through the c++ code of the whole plugin and what not. Idk what specific function it has in the code that they use to calculate the Z height at any given time on the given position. The water system is highly advanced but I feel it lacks this one little thing of not exposing a function that retrieves the wave height. I really hope the devs look into this. Its just a matter of exposing the c++ function which determines the height to the blueprints.