diff --git a/amworkflow/src/geometries/composite_geometry.py b/amworkflow/src/geometries/composite_geometry.py
index f806c86..cf03c8c 100644
--- a/amworkflow/src/geometries/composite_geometry.py
+++ b/amworkflow/src/geometries/composite_geometry.py
@@ -583,7 +583,7 @@ def Shape(self):
     def create_sides(self):
         if self.R is not None:
             self.pts = polygon_interpolater(self.pts, self.interpolate)
-            bender(self.pts, self.R)
+            self.pts = bender(self.pts, self.R)
             self.pts = [i for i in self.pts]
         self.th *= 0.5
         for i,p in enumerate(self.pts):
diff --git a/amworkflow/src/geometries/operator.py b/amworkflow/src/geometries/operator.py
index 45dd4d9..0306ea2 100644
--- a/amworkflow/src/geometries/operator.py
+++ b/amworkflow/src/geometries/operator.py
@@ -264,6 +264,7 @@ def bender(point_cordinates, radius: float = None, mx_pt: np.ndarray = None, mn_
         thetp = lp / (Rp)
         pt[0] = Rp * np.sin(thetp)
         pt[1] = o_y - Rp*np.cos(thetp)
+    return point_cordinates
         
 def array_project(array: np.ndarray, direct: np.ndarray) -> np.ndarray:
     '''
diff --git a/examples/pwall/pwall.py b/examples/pwall/pwall.py
index f030489..47533dc 100644
--- a/examples/pwall/pwall.py
+++ b/examples/pwall/pwall.py
@@ -19,11 +19,11 @@ def geometry_spawn(pm):
     put1 = g.p_translate(pu, [3 * l, 0, 0]) # Translate the unit _/-\_/-\
     end_p = np.copy(put1[-1]) 
     end_p[0] += l * 0.5 # Add one point to make half of the infill _/-\_/-\_
-    pm = pu + put1 # integrate the points together
-    pm.append(end_p) # add the point
+    p_up = pu + put1 # integrate the points together
+    p_up.append(end_p) # add the point
     # pm_cnt = g.p_center_of_mass(pm)
     # pm_cnt[0] -=hth
-    pmr = g.p_rotate(pm, angle_z=np.pi) # Rotate the half infill to make it upside down
+    pmr = g.p_rotate(p_up, angle_z=np.pi) # Rotate the half infill to make it upside down
     # pmr = g.p_translate(pmr, np.array([-th,0,0]))
     cnt2 = g.p_center_of_mass(pmr) #Get the center of mass of all points
     t_len = cnt2[1] * 2 #2 times the y coord would be the length for translation