array(
                        'class'            => 'input-full',
                        'controller'       => '#' . $this->prefix . 'time_period',
                        'controller_value' => 'yes',
                        'default'          => sprintf( __( 'This course opens on [lifterlms_course_info id="%d" key="start_date"].', 'lifterlms' ), $this->post->ID ),