[PyMOL] Create a dummy atom

[ABEL S. 1. <Ste...@ce...>]

Dear all, 

I have a simple question but i have found no response: i have downloaded a pymol script COM.py from the pymol wiki to obtain the coordinates x, y and z of the center of mass of my protein. Now i would like to create a dummy at these coordinates. How to do that with pymol ?

Thank for your help

Stephane