I know this maybe a little late, but I was hoping that someone can still help me. So far, I was able to draw the splines, add my custom meshes, along with attaching the spline to the landscape. However, for the life of me, I cannot get the visual landscape size to appear on the spline. It will apply the size you change in the lsm in/output values, and I have “show landscape szises” ticked, but not being able to see the landscape size does not help. It is like I have to guess in the dark to find the appropriate landscape size. I am not sure why it is not working, but would it have something to do with spelling of the word szises? The correct spelling is sizes.