I am using taxonomy manager module I want to add ajax callback to checkbox tree view for checkbox is checked condition but it is not working can some one please suggest me. I have modified the code like this

$form[$term->tid]['checkbox'] = array(       '#type' => ($multiple) ? 'checkbox' : 'radio',       '#title' => $term->name, // Escaping is done in theme wrappers.       '#value' => $value,       '#return_value' => $term->tid,       '#ajax' => array(         'callback' => 'ajax_example_autocheckboxes_callback',         'wrapper' => 'checkboxes-div',         'method' => 'replace',         'effect' => 'fade',       ),       '#required' => FALSE,       '#theme_wrappers' => ($multiple) ? array('taxonomy_manager_tree_checkbox') : array('taxonomy_manager_tree_radio'),       '#highlight' => in_array($term->tid, $terms_to_highlight) ? TRUE : FALSE,     ); 

This is the taxonomy manager module theme function.

function theme_taxonomy_manager_tree_checkbox($variables) {   global $user;   $element = $variables['element'];   $element['#attributes']['type'] = 'checkbox';   $element['#attributes']['ajax']['event'] = 'change';   element_set_attributes($element, array('id', 'name', '#return_value' => 'value'));    // Unchecked checkbox has #value of integer 0.   if (!empty($element['#checked'])) {     $element['#attributes']['checked'] = 'checked';   }   _form_set_class($element, array('form-checkbox'));   $output = '<input' . drupal_attributes($element['#attributes']) . ' />';   /* custom alter function */   if(user_is_logged_in()){     if(!user_access('administer taxonomy')){       $cdms_taxonomy_id = taxonomy_term_load($element['#return_value']);        // echo "IF"; exit;          }else{       $cdms_taxonomy_id = taxonomy_term_load($element['#return_value']);       // echo "Else"; exit;           }   }   // echo '<pre>';print_r($variables);  echo"Term load"; print_r($cdms_taxonomy_id);  exit;   $data = [     'title' =>  $element['#title'],     'tid' => @$cdms_taxonomy_id->field_cdms_txy_id[LANGUAGE_NONE][0][value],     'count' => '',   ];   // Calling all modules implementing hook_my_data_alter():   drupal_alter('my_data', $data);      if (!in_array("Client User", array_values($user->roles))) {   $title = $element['#title'] ."(".$data['count'].")"; }else{    $title = $element['#title']; }   if (in_array("Client User", array_values($user->roles))) {     $title = check_plain($title);   }else{     if (isset($element['#link'])) {         $attr = array();         $attr["class"][] = "term-data-link";         $attr["class"][] = "term-data-link-id-" . $element['#return_value'];         if (isset($element['#extra_info'])) {           $attr["title"] = $element['#extra_info'];         }         $title = l($title, $element['#link'], array('attributes' => $attr));       }       else {         $title = check_plain($title);       }   }      $element['#children'] = '<label class="option">' . $output . ' ' . $title . '</label>';   $element['#title_display'] = 'none';   return theme('form_element', array('element' => $element)); }