public function act_delete_coe()
 {
     if (!isset($_POST['coes']) || isset($_POST['no'])) {
         set_redirect_header('events', 'coe_list');
         return;
     }
     $this->del_confirm = true;
     if (isset($_POST['yes'])) {
         if (isset($_POST['coe'])) {
             array_push($_POST['coes'], $_POST['coe']);
         }
         //if multiplt events are selected
         if (is_array($_POST['coes'])) {
             foreach ($_POST['coes'] as $coe) {
                 $c = new ChainOfEvents();
                 $c->DeleteFromRecordNumber($coe);
             }
         }
         set_redirect_header('events', 'coe_list');
         return;
     }
     $this->related_events = Browse::getCOEListArray($_POST['coes']);
 }