Meta Slider - Flex Slider Delay First Slide

/**
 * INSTALLATION: this code should be pasted into your theme's functions.php file.
 *
 * Use this filter to set a custom delay on the first slide in the slideshow.
 */
function metaslider_delay_first_slide($options, $slider_id, $settings) {
    $delay = 5000; // delay for first slide in milliseconds
    $options['start'][] = "slider.pause(); setTimeout(function(){ slider.play(); }, {$delay});" ;
    $options['after'][] = "if (slider.currentSlide == 0) { slider.pause(); setTimeout(function(){ slider.play(); }, {$delay}); }" ;
    return $options;
}
add_filter('metaslider_flex_slider_parameters', 'metaslider_delay_first_slide', 10, 3);