Loop once (flex slider)

Meta Slider - Flex Slider Loop Once (Stop on Last)

/**
 * INSTALLATION: this code should be pasted into your theme's functions.php file.
 *
 * Use this filter to stop Flex Slider from looping back to the start of the slideshow (ending on the last slide)
 */
function metaslider_loop_once($options, $slider_id, $settings) {
    $options['after'][] = "if ((slider.currentSlide + 1) == slider.count) { slider.pause(); }";
    return $options;
}
add_filter('metaslider_flex_slider_parameters', 'metaslider_loop_once', 10, 3);