Error when changing icons in the Yandex.Maps constructor, how to avoid?

Question

JavaScript

I'm trying to replace the icon, I'm doing it according to the instructions .
An error is thrown:

The code is like this (in the header):

<script>
        window.onload = function () {        
            var mapI = new YMaps.Style();

            mapI.iconStyle = new YMaps.IconStyle();

            mapI.iconStyle.href = "img/point-map.png";
            mapI.iconStyle.size = new YMaps.Point(18, 22);
            mapI.iconStyle.offset = new YMaps.Point(-9, -22);

            var placemark = new YMaps.Placemark(point, {style: mapI});
            map.addOverlay(placemark);
        };
</script>

He doesn't like point at 3 from the end of the line. No idea what he is responsible for and where to get
The patient himself: alucom.bookreev.com

Answer 1

Found similar code here . B Set Placemark Style
// Creates a placemark with a small red icon
var placemark = new YMaps.Placemark(new YMaps.GeoPoint(35, 55), {style: "default#redSmallPoint"});

Answer 2

Probably it is necessary to go through all the created markers and replace their style with the newly created one.