I am working on Leandash Project , Now my requirement is some students have completed the course offline , So I have created a screen for a group leader in which the group leader can select group/user/course and also add date like this ( https://prnt.sc/1bfcq3a ) and can mark complete COURSE.

So my question is how do I mark complete COURSE. programmatically on link click.

here is my code , which is not working

jQuery(document).on('click', '.course_complete_save', function(event) {
    event.preventDefault();

    var selected_group_id = jQuery('#group_name_select_dropdown').val();
    var selected_user_id = jQuery('#user_name_select_dropdown').val();
    var selected_course_id = jQuery('#course_name_select_dropdown').val();
    var mark_complete_date = jQuery('#input_date_field').val();

    var params =  {"mark_complete_date":mark_complete_date,"selected_group_id":selected_group_id,"selected_user_id":selected_user_id,"selected_course_id":selected_course_id,action:"mark_complete_course_ajax"}

    jQuery.post(groupcustomisation.ajaxurl,params,function(data){
        if(data){
            jQuery(".mark_complete_success").empty().append("Mark Completed");
        }else{
            jQuery(".mark_complete_success").empty().append("No data Found");
        }

    });
});


<?php 
add_action('wp_ajax_nopriv_mark_complete_course_ajax', 'mark_complete_course_ajax');
add_action('wp_ajax_mark_complete_course_ajax', 'mark_complete_course_ajax');
function mark_complete_course_ajax() {

    $selected_group_id = $_POST['selected_group_id'];
    $selected_user_id = $_POST['selected_user_id'];
    $selected_course_id = $_POST['selected_course_id'];
    $mark_complete_date = $_POST['mark_complete_date'];

    learndash_process_mark_complete( $selected_user_id, $selected_course_id, true, $selected_course_id );
        
    echo "1";
         
    die();
}