How to make a drop-down list of cities on Yandex maps?

Question

JavaScript

Good day!
You need to make sure that there is a drop-down list of cities. When choosing a city from the list, you need to center the map on this city. There should also be an item "All cities", and the map is centered on the specified coordinates simply.
I found this option https://jsfiddle.net/gmsxeLb9/27/
But, since I'm almost zero in JS, I don't understand where to insert the coordinates.
I put in .geometry.getCoordinates() , but it doesn't center when city is selected. Even if I insert the required value into geoObjects.get(0)
And yes, the dropdown list must be implemented via select