get longitude et laltitude from map component

Hello ,
I am now using tha new map component and I have many points on this map .
I defined 2 Generic simple parameters (longitudde and latitude).
I like to get , for each marker , it's coordinates to use that for the poup up window.
I don't know what I have to put on these feilds :
* Marker click function
*CGG graph for marker

ther is a screen shot .
thank you

Haythem