Title: um_submit_form_errors_hook_ not working
Last modified: February 8, 2024

---

# um_submit_form_errors_hook_ not working

 *  Resolved [segiotimane](https://wordpress.org/support/users/segiotimane/)
 * (@segiotimane)
 * [2 years, 3 months ago](https://wordpress.org/support/topic/um_submit_form_errors_hook_-not-working/)
 *     ```wp-block-code
       function verify_id_number($id_number, $gender = '', $foreigner = 0) {
           $validated = false;
           if (is_numeric($id_number) && strlen($id_number) === 13) {
               $errors = false;
               $num_array = str_split($id_number);
               $id_month = $num_array[2] . $num_array[3];
               $id_day = $num_array[4] . $num_array[5];
   
               if ($id_month < 1 || $id_month > 12) {
                   $errors = true;
               }
               if ($id_day < 1 || $id_day > 31) {
                   $errors = true;
               }
               $id_gender = $num_array[6] >= 5 ? 'male' : 'female';
               if ($gender && strtolower($gender) !== $id_gender) {
                   $errors = true;
               }
               $id_foreigner = $num_array[10];
               if (( $foreigner || $id_foreigner ) && (int)$foreigner !== (int)$id_foreigner) {
                   $errors = true;
               }
   
               $even_digits = array();
               $odd_digits = array();
               foreach ($num_array as $index => $digit) {
                   if ($index === 0 || $index % 2 === 0) {
                       $odd_digits[] = $digit;
                   } else {
                       $even_digits[] = $digit;
                   }
               }
               $check_digit = array_pop($odd_digits);
               $added_odds = array_sum($odd_digits);
               $concatenated_evens = implode('', $even_digits);
               $evensx2 = $concatenated_evens * 2;
               $added_evens = array_sum(str_split($evensx2));
               $sum = $added_odds + $added_evens;
               $last_digit = substr($sum, -1);
               $verify_check_digit = (10 - (int)$last_digit) % 10;
               if ((int)$verify_check_digit !== (int)$check_digit) {
                   $errors = true;
               }
               if (!$errors) {
                   $validated = true;
               }
           }
           return $validated;
       }
   
       add_action('um_submit_form_errors_hook', 'my_custom_validate_id_number', 10, 1);
   
       function my_custom_validate_id_number($post) {
           // Assuming 'drivers_id_number' is the key of your field in the form
           $id_number = isset($post['drivers_id_number']) ? $post['drivers_id_number'] : '';
   
           // Perform your validation (calling a hypothetical validate_id_number function)
           if (!empty($id_number) && !validate_id_number($id_number)) {
               UM()->form()->add_error('drivers_id_number', 'Invalid ID Number');
           }
       }
       ```
   
 * Please help me to debug this code, 
   What I need to achieve is to validate the
   ID number entered in UM form field. If it passes the form should be normally 
   submitted, else display the error
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fum_submit_form_errors_hook_-not-working%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [missveronica](https://wordpress.org/support/users/missveronicatv/)
 * (@missveronicatv)
 * [2 years, 3 months ago](https://wordpress.org/support/topic/um_submit_form_errors_hook_-not-working/#post-17409008)
 * [@segiotimane](https://wordpress.org/support/users/segiotimane/)
 * You must add the User `$gender` and `$foreigner` values from `$post`
    in the 
   call to `validate_id_number($id_number)`
 *  Plugin Support [andrewshu](https://wordpress.org/support/users/andrewshu/)
 * (@andrewshu)
 * [2 years, 3 months ago](https://wordpress.org/support/topic/um_submit_form_errors_hook_-not-working/#post-17420648)
 * Hi [@segiotimane](https://wordpress.org/support/users/segiotimane/)
 * This thread has been inactive for a while so we’re going to go ahead and mark
   it Resolved.
 * Please feel free to re-open this thread if any other questions come up and we’d
   be happy to help. 🙂
 * Regards

Viewing 2 replies - 1 through 2 (of 2 total)

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## Tags

 * [custom-validation](https://wordpress.org/support/topic-tag/custom-validation/)
 * [field validation](https://wordpress.org/support/topic-tag/field-validation/)

 * 2 replies
 * 3 participants
 * Last reply from: [andrewshu](https://wordpress.org/support/users/andrewshu/)
 * Last activity: [2 years, 3 months ago](https://wordpress.org/support/topic/um_submit_form_errors_hook_-not-working/#post-17420648)
 * Status: resolved