myMapList.events.add('boundschange', function (event) {MyBoundsChange();});function MyBoundsChange(){// ajax запрос -> ConstructAPoint(data_xml);}function ConstructAPoint(_arr){myMapList.geoObjects.each(function (geoObject) { myMapList.geoObjects.remove(geoObject); });var clusterer = new ymaps.Clusterer();clusterer.options.set({disableClickZoom: false,synchAdd: false,icons: clusterIcons,numbers: [10],balloonHeight: 100,balloonSidebarWidth: 50,balloonWidth: 100});clusterer.add(BaseGeoObjectsArrayObj);myMapList.geoObjects.add(clusterer);}