Не выполняется построение маршрута

Пытаюсь получить координату пересечения маршрута с МКАД.

асинхронная функция ymaps.route([coordsCenter,coords]).then( выполняет код уже после появления метки на карте, как сделать так чтобы эта функция выполнялась последовательно?

ymaps.ready().then(function (){

var myMap = new ymaps.Map("map", {
        center: [55.7718353, 37.6473093],
        zoom: 10,
        controls: ['zoomControl', 'searchControl']
    }, {
        searchControlProvider: 'yandex#map'
    });
    
var searchControl = myMap.controls.get('searchControl');

    var myPolygonMKAD = new ymaps.Polygon([
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],
{}, {
    fillColor: '#1E90FF',
    opacity: 0.2,
    strokeWidth: 1,
});
myMap.geoObjects.add(myPolygonMKAD);

var myPlacemark;    
    // Слушаем клик на карте.
myMap.events.add('click', function (e) {
    var coords = e.get('coords');
    var coordsCenter = [55.77183533, 37.64730933];  
    ymaps.route([coordsCenter,coords]).then( //ВОТ ЗДЕСЬ ПРОБЛЕМА, ПРОВАЛИВАЕТСЯ ВНУТРЬ ФУНКЦИИ УЖЕ ПОСЛЕ ПОЯВЛЕНИЯ МЕТКИ, 
                                             //КАК СДЕЛАТЬ ТАК, ЧТОБЫ ЭТА ФУНКЦИЯ ВЫЗЫВАЛАСЬ ПОСЛЕДОВАТЕЛЬНО
        function (res) {
            // Объединим в выборку все сегменты маршрута.
            var pathsObjects = ymaps.geoQuery(res.getPaths()),
                edges = [];
            
            // Переберем все сегменты и разобьем их на отрезки.
            pathsObjects.each(function (path) {
                var coordinates = path.geometry.getCoordinates();
                for (var i = 1, l = coordinates.length; i < l; i++) {
                    edges.push({
                        type: 'LineString',
                        coordinates: [coordinates[i], coordinates[i - 1]]
                    });
                }
            });
        
            // Создадим новую выборку, содержащую:
            // - отрезки, описываюшие маршрут;
            // - начальную и конечную точки;
            // - промежуточные точки.
            var routeObjects = ymaps.geoQuery(edges)
                .add(res.getWayPoints())
                .add(res.getViaPoints())
                .setOptions('strokeWidth', 3)
                .addToMap(myMap),
            // Найдем все объекты, попадающие внутрь МКАД.
            objectsInMoscow = routeObjects.searchInside(myPolygonMKAD),
            // Найдем объекты, пересекающие МКАД.
            boundaryObjects = routeObjects.searchIntersect(myPolygonMKAD);
            // Раскрасим в разные цвета объекты внутри, снаружи и пересекающие МКАД.
            boundaryObjects.setOptions({
                strokeColor: '#06ff00',
                preset: 'islands#greenIcon'
            });
            objectsInMoscow.setOptions({
                strokeColor: '#ff0005',
                preset: 'islands#redIcon'
            });
            // Объекты за пределами МКАД получим исключением полученных выборок из
            // исходной.
            PeresechenieMKAD = routeObjects.remove(objectsInMoscow).remove(boundaryObjects).get(0).geometry.getBounds()[0];
            routeObjects.remove(objectsInMoscow).remove(boundaryObjects).addToMap(myMap);
            routeObjects.removeFromMap(myMap);
            alert('PeresechenieMKAD:'+PeresechenieMKAD);
            return PeresechenieMKAD;
        },
        function(error){
                  alert('Error'+error.msg);
        },
    );
    // Если метка уже создана – просто передвигаем ее.
    if (myPlacemark) {
        myPlacemark.geometry.setCoordinates(coords);
    }
    // Если нет – создаем.
    else {
        myPlacemark = createPlacemark(coords);
        myMap.geoObjects.add(myPlacemark);
        // Слушаем событие окончания перетаскивания на метке.
        myPlacemark.events.add('dragend', function () {
            getAddress(myPlacemark.geometry.getCoordinates());
        });
    }   
});

// Создание метки.
function createPlacemark(coords) {
    return new ymaps.Placemark(coords, {
        iconCaption: 'поиск...'
    }, {
        preset: 'islands#violetDotIconWithCaption',
        draggable: true
    });
}        

})