Unity Google Maps Custom Style

Hello everyone, my first post here. I looked, searched a lot about it without any success.

I managed to get the Google Maps Unity SDK working, the examples work fine. Specific for example 3 StylingMaps101 we can change the style of specific region in the map. I do want to change the style but I also want to change only a specific portion of the map. I have defined a region using the option to Save My Map on Google Maps website, not even sure if this is possible.

My question is. How I can define the region to get on Google Maps in Unity? Inside Unity everything is dynamic so I can't get the knowledge of where I could define it.

thanks for all the help. If I need to explaining more and better please tell me.