diff --git a/DemoPrograms/Demo_OpenCV_Draw_On_Webcam_Image.py b/DemoPrograms/Demo_OpenCV_Draw_On_Webcam_Image.py
index dd14bb91..fff2a93b 100644
--- a/DemoPrograms/Demo_OpenCV_Draw_On_Webcam_Image.py
+++ b/DemoPrograms/Demo_OpenCV_Draw_On_Webcam_Image.py
@@ -7,10 +7,15 @@ import cv2
     webcam stream, as it's being displayed.  To "Draw" simply move your mouse over the image, left click and hold, and
     then drag your mouse.  You'll see a series of red circles on top of your image.
     CURRENTLY ONLY WORKS WITH PySimpleGUI, NOT any of the other ports at this time.
+    
+    Note also that this demo is using ppm as the image format.  This worked fine on all PySimpleGUI ports except 
+    the web port.  If you have trouble with the imencode statement, change "ppm" to "png"
+    
+    Copyright 2021 PySimpleGUI
 """
 
 def main():
-    layout = [[sg.Graph((600,450),(0,450), (600,0), key='-GRAPH-', enable_events=True, drag_submits=True)],]
+    layout = [[sg.Graph((600,450),(0,450), (600,0), key='-GRAPH-', enable_events=True, drag_submits=True)],],
 
     window = sg.Window('Demo Application - OpenCV Integration', layout)
     graph_elem = window['-GRAPH-']      # type: sg.Graph
@@ -23,11 +28,11 @@ def main():
             break
 
         ret, frame = cap.read()
-        imgbytes=cv2.imencode('.ppm', frame)[1].tobytes()
+        imgbytes=cv2.imencode('.ppm', frame)[1].tobytes()       # on some ports, will need to change to png
         if a_id:
             graph_elem.delete_figure(a_id)             # delete previous image
         a_id = graph_elem.draw_image(data=imgbytes, location=(0,0))    # draw new image
-        graph_elem.TKCanvas.tag_lower(a_id)           # move image to the "bottom" of all other drawings
+        graph_elem.send_figure_to_back(a_id)            # move image to the "bottom" of all other drawings
 
         if event == '-GRAPH-':
             graph_elem.draw_circle(values['-GRAPH-'], 5, fill_color='red', line_color='red')