Disable course retakes once the user passes the course and gets course certificate

functions.php

add_filter('wplms_course_retake_count',function($count,$course_id,$user_id){
      $status = bp_course_get_user_course_status($user_id,$course_id);
      if($status == 4){
          $marks = bp_course_get_marks($user_id,$course_id);
          $passing_per = get_post_meta($id,'vibe_course_passing_percentage',true);
          if($marks > $passing_per){
              return 0;
          }
      }

      return $count;
  },999,3);