Ok, i think your wanted feauture will not work as i expected it.
Tried to use the standard Wix-out-of-the-box map, i assume you won’t be able to achieve your aim - → using the standard wix-map.
There are no given API-possibilities for that.
You even can’t set multiple pins on the map using code.
Your only way out - - > generating all the map in an HTML-Component.
You can find a very good example (made by Yisrael), when you search for it…
https://www.wix.com/velo/forum/tips-tutorials-examples/example-multiple-markers-google-maps
Using the HTML-Component-version should give you the ability to do more with your map.