WP Multiple Select Media Manager in Plugin

        //When a file is selected, grab the URL and set it as the text field's value
        custom_uploader_photo.on('select', function() {
            var selection = custom_uploader_photo.state().get('selection');
            var count = 0;
            selection.each( function( attachment ) {
              attachment = attachment.toJSON();
                console.log(attachment);
                $("#gallery").append("<img src=" +attachment.url+" name='pic["+count+"]' style='width:150px;height:150px;'>");
                count++;
            });
        });