I need to add the map in my wordpress site, but i have to put only the characters after ‘mid=’
Example:

-<https://www.google.com/maps/d/viewer?msa=0&mid=zYSGCTGPw92M.kZ0t92LPNDTM> the url of the address;

* mid=zYSGCTGPw92M.kZ0t92LPNDTM the part of the url i need to see;
* zYSGCTGPw92M.kZ0t92LPNDTM the code to put in google maps source field.

The problem is that now, whatever address i put in search field of google map, that MID does not change! So in the end i get to have the previous address again. 
Can anyone give me a hint, how does google maps work now?? How do i get that mid to change?

Thanks all,
Best regards!