Get current map widget

Hello all

I try to get solution for changing current map widget.

It need to detect current active trigger box where player is located

This trigger box can overlapped and be one above other, so i try to add priority to trigger box.

So if player is on several map plans blueprint select map with a highest priority.

This is my test project http://i.imgur.com/7a7MOZr.png

https://drive.google.com/file/d/0B2gY2jqH8FS8WU1Wd2NycDZtOWc/view?usp=sharing

Can you help me?

Or can you post some links for learning how to do this.

Thank you