diff --git a/grassloper/main.py b/grassloper/main.py
index 6f2580e..07b1760 100755
--- a/grassloper/main.py
+++ b/grassloper/main.py
@@ -137,6 +137,7 @@ class SlopeFinder():
             y = surface_y[x]
             if y != is_non_jumping_bead_image.shape[0]:
                 surface_pts.append((x, y))
+                mo_pro_listener.m_imageProcessListener.onPoint((x, y), 'surface')
         # print(surface_pts)
         x = [pt[0] for pt in surface_pts]
         y = [pt[1] for pt in surface_pts]