Google Map Extended Plugin - Empty center coordinates

Hi bubblers!
I’m trying to integrate my bubble application with a map, enabling user to choose a arbitrary position. On a button click event, I need to access lat/lng of center of the map in order to pinpoint it. But these values are always empty, so the marker does not appear on the map.

For the record, my page layout is align to parent and the Maps Extended visual element is centered, full width and height.

Well, besides great appreciation for the plugin support, I had to abandon it and use bubble default map, go through a lot of sloppy stuff to get different icon for each marker and implement all the API calls on my own. Thanks!