public function displayMetaValue($atts, $content = "")
    {
        //Default value
        extract(shortcode_atts(array(
            'key' => ''
        ), $atts));

        //Get field with formatting if exits
        if (function_exists('get_field')) {
            return (string) get_field($key);
        } else {
            global $post;
            return (string) get_post_meta($post->ID, $key);
        }
    }