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Polyline clicks for Google Maps do not start PolyMouseEvent

I am trying to get the index of an edge in a polyline path, as it is written in the documentation . However, I get undefined values ​​when I fire the click event on the polyline.

Here is my code: edge, path and vertex are all undefined

route = new google.maps.Polyline({
path: polyLineArray,
strokeColor: "#FF0000",
strokeOpacity: 1.0,
strokeWeight: 5,
clickable: true,
editable: false
});

google.maps.event.addListener(route, 'click', function(evt) {           
  console.log("route click1: " + evt.edge);
  console.log("route click2: " + evt.path);
  console.log("route click2: " + evt.vertex);
  console.log("route click3: " + evt);
  for(var property in evt) {
   console.log("route click4: " + property + " - " + evt[property]);
  }

}});

Am I missing something? Many thanks

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1 answer

I see the same results in my test case

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documentation, , /:

google.maps.PolyMouseEvent object
This object is returned from mouse events on polylines and polygons.

This object extends MouseEvent.
Properties
Properties | Type   | Description
edge       | number | The index of the edge within the path beneath the cursor when 
                    | the event occurred, if the event occurred on a mid-point on an 
                    | editable polygon.
path       | number | The index of the path beneath the cursor when the event 
                    | occurred, if the event occurred on a vertex and the polygon
                    | is editable. Otherwise undefined.
vertex     | number | The index of the vertex beneath the cursor when the event 
                    | occurred, if the event occurred on a vertex and the polyline or 
                    | polygon is editable. If the event does not occur on a vertex, 
                    | the value is undefined.

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