Python help with a test for a game

im working on a test to see if i can send messages through python (im a relative python newbie btw) iv got my script worked out but for some reason it wont work.
i have a plane with an empty. The empty’s logic is

Keyboard -------------------- Python --------------------------- Message
Space ------------------------Message ------------------------
.
The Plane has a Property called Plane ands logic is
.
Message ----------------- Python
------------------Move
.
The Blend File
http://putstuff.putfile.com/43435/8342465

I would be very happy if someone could help me with my problem

mes.setToPropName(“OBPlane”)

thank you it works now