Почему не зумируется метка на Яндекс карте?

var ymaps,lastRoute;
      if(typeof ymaps !== 'undefined') {
    ymaps.ready(function() {
      myMap = new ymaps.Map('map', {
        //center: [55.788668, 49.099914],
        center: [59.88157957, 30.31588162],
        zoom: 16,
        //controls: ["zoomControl", "trafficControl", "geolocationControl", "routeEditor", "rulerControl"]
        controls: ["geolocationControl"]
      });
      //doRoute([55.788668, 49.099914]);


 
      // test begin
      /*var myPlacemark = new ymaps.Placemark([59.88157957, 30.31566162] , {
        hintContent: 'test"'
      },
          { iconLayout: 'default#image',
            iconImageHref: './img/map-balloon.png',
            iconImageSize: [300, 157],
            iconImageOffset: [-110, -67] });      
      myMap.geoObjects.add(myPlacemark);*/
      var myPlacemark = new ymaps.Placemark([59.88157957, 30.31566162] , {
        hintContent: 'test"'
      },
          { iconLayout: 'default#image',
            iconImageHref: './img/map-balloon.png',
            //iconImageSize: [170, 80],
            iconImageSize: [300, 157],
            iconImageOffset: [-110, -47] });      
      myMap.geoObjects.add(myPlacemark);
      // test end




    });
    doRoute = function(pos) {
          ymaps.route([
            pos,
            //[55.779894, 49.128862]
            [59.88157957, 30.31566162]
          ], {
            boundedBy: myMap.getBounds(),
            mapStateAutoApply: true
          }).then(function (route) {
            lastRoute = route;
            myMap.geoObjects.add(route);

            var points = route.getWayPoints(),
                lastPoint = points.getLength() - 1,
                paths = route.getPaths();

            paths.options.set({
              strokeColor: '50caef',
              strokeWidth: 5,
              opacity: 0.9
            });


          }, function (error) {
            alert('Возникла ошибка: ' + error.message);
          });
        },
        removeRoute = function() {
          lastRoute && myMap.geoObjects.remove(lastRoute);
        };
  }


  $(document).on('submit', '.enter_address_form', function(e) {
    e.preventDefault();
    var $form = $(this),
        $input = $form.find('[name="address"]'),
        address = $input.val();

    removeRoute();
    doRoute(address);
    $input.blur();

    return false;
  });