ok, here is the setup. I have an existing pond that i have to regrade and add a retaining wall to one side. using the grading tools it is easy enough to create a pond by itself. My problem is i have to had a wall to one end of the pond. basically making one side a vertical wall instead of a sloped bank. i have tried using the "wall breakline" feature in the surface menu and even tried making the wall with feature lines. am i missing a step? any help would be much appreciated.