Pin numbers for multiple locations on the same node

Hi, I am using D5.15, GMap 5.x-1.0 module and Location module.
I set a content type to have multiple location.
In the GMap location module settings page, I chose "numbers" for markers style for that content type.
Now if activate the Map location block to show the map when I go on my node page, I have multiple markers but with the same "0" number.

You can see here:
http://d5.euricse.eu/node/8

How can I have them numbered correctly like 1, 2, 3... ?

Thank you,
GP