$('#map').locationpicker({
            location: {
                latitude: initLat,
                longitude: initLon
            },
            radius: initRadius,
            zoom: initZoom,
            inputBinding: {
                latitudeInput: $('#map-lat'),
                longitudeInput: $('#map-lon'),
                locationNameInput: $('#map-address'),
                radiusInput: $('#map-radius')
            },
            onchanged: function (currentLocation, radius, isMarkerDropped) {
                var mapContext = $('#map').locationpicker('map');
                mapContext.marker.setVisible(true);
                mapContext.map.setZoom(13);

                //CHANGE RADIUS HERE
                mapContext.circle.setRadius(###);

            },
            enableAutocomplete: true,
            addressFormat: 'street_address',
            autocompleteOptions: {
                componentRestrictions: { country: 'us' }
            }
        });