Accessing Landscape in Blueprint.

I followed one of the Epic live streams and learned how to create a road/track maker blueprint.

I also found out that I could possibly use the “Editor Apply Spline” to get a landscape to deform to my track. I’m having a very hard time trying to figure out how to access the landscape in my blueprint. The “Editor Apply Spline” is looking for a LandscapeProxy to be passed to it, but I have no idea how to get this to work.

Any help would be greatly appreciated!