function cloneTask($new_st_date = '', $new_due_date = '', $copy_status = false, $copy_repeat_options = true, $parent_subtask = 0)
 {
     $new_task = new TemplateTask();
     if ($parent_subtask != 0) {
         $new_task->setParentId($parent_subtask);
     } else {
         $new_task->setParentId($this->getParentId());
     }
     $new_task->setObjectName($this->getObjectName());
     $new_task->setText($this->getText());
     $new_task->setAssignedToContactId($this->getAssignedToContactId());
     $new_task->setAssignedOn($this->getAssignedOn());
     $new_task->setAssignedById($this->getAssignedById());
     $new_task->setTimeEstimate($this->getTimeEstimate());
     $new_task->setStartedOn($this->getStartedOn());
     $new_task->setStartedById($this->getStartedById());
     $new_task->setPriority($this->getPriority());
     $new_task->setState($this->getState());
     $new_task->setOrder($this->getOrder());
     $new_task->setMilestoneId($this->getMilestoneId());
     $new_task->setFromTemplateId($this->getFromTemplateId());
     $new_task->setUseStartTime($this->getUseStartTime());
     $new_task->setUseDueTime($this->getUseDueTime());
     $new_task->setTypeContent($this->getTypeContent());
     if ($this->getParentId() == 0) {
         //if not subtask
         if ($this->getOriginalTaskId() == 0) {
             $new_task->setOriginalTaskId($this->getObjectId());
         } else {
             $new_task->setOriginalTaskId($this->getOriginalTaskId());
         }
     }
     if ($this->getDueDate() instanceof DateTimeValue) {
         $new_task->setDueDate(new DateTimeValue($this->getDueDate()->getTimestamp()));
     }
     if ($this->getStartDate() instanceof DateTimeValue) {
         $new_task->setStartDate(new DateTimeValue($this->getStartDate()->getTimestamp()));
     }
     if ($copy_status) {
         $new_task->setCompletedById($this->getCompletedById());
         $new_task->setCompletedOn($this->getCompletedOn());
     }
     if ($copy_repeat_options) {
         $new_task->setRepeatEnd($this->getRepeatEnd());
         $new_task->setRepeatForever($this->getRepeatForever());
         $new_task->setRepeatNum($this->getRepeatNum());
         $new_task->setRepeatBy($this->getRepeatBy());
         $new_task->setRepeatD($this->getRepeatD());
         $new_task->setRepeatM($this->getRepeatM());
         $new_task->setRepeatY($this->getRepeatY());
     }
     if ($new_st_date != "") {
         if ($new_task->getStartDate() instanceof DateTimeValue) {
             $new_task->setStartDate($new_st_date);
         }
     }
     if ($new_due_date != "") {
         if ($new_task->getDueDate() instanceof DateTimeValue) {
             $new_task->setDueDate($new_due_date);
         }
     }
     $new_task->save();
     if (is_array($this->getAllLinkedObjects())) {
         foreach ($this->getAllLinkedObjects() as $lo) {
             $new_task->linkObject($lo);
         }
     }
     $sub_tasks = $this->getAllSubTasks();
     foreach ($sub_tasks as $st) {
         $new_dates = $this->getNextRepetitionDatesSubtask($st, $new_task, $new_st_date, $new_due_date);
         if ($st->getParentId() == $this->getId()) {
             $new_st = $st->cloneTask(array_var($new_dates, 'st'), array_var($new_dates, 'due'), $copy_status, $copy_repeat_options, $new_task->getId());
             if ($copy_status) {
                 $new_st->setCompletedById($st->getCompletedById());
                 $new_st->setCompletedOn($st->getCompletedOn());
                 $new_st->save();
             }
             $new_task->attachTask($new_st);
         }
     }
     foreach ($this->getAllComments() as $com) {
         $new_com = new Comment();
         $new_com->setAuthorEmail($com->getAuthorEmail());
         $new_com->setAuthorName($com->getAuthorName());
         $new_com->setAuthorHomepage($com->getAuthorHomepage());
         $new_com->setCreatedById($com->getCreatedById());
         $new_com->setCreatedOn($com->getCreatedOn());
         $new_com->setUpdatedById($com->getUpdatedById());
         $new_com->setUpdatedOn($com->getUpdatedOn());
         $new_com->setText($com->getText());
         $new_com->setRelObjectId($new_task->getId());
         $new_com->save();
     }
     $_POST['subscribers'] = array();
     foreach ($this->getSubscribers() as $sub) {
         $_POST['subscribers']["user_" . $sub->getId()] = "checked";
     }
     $obj_controller = new ObjectController();
     $obj_controller->add_to_members($new_task, $this->getMemberIds());
     $obj_controller->add_subscribers($new_task);
     foreach ($this->getCustomProperties() as $prop) {
         $new_prop = new ObjectProperty();
         $new_prop->setRelObjectId($new_task->getId());
         $new_prop->setPropertyName($prop->getPropertyName());
         $new_prop->setPropertyValue($prop->getPropertyValue());
         $new_prop->save();
     }
     $custom_props = CustomProperties::getAllCustomPropertiesByObjectType("TemplateTasks");
     foreach ($custom_props as $c_prop) {
         $values = CustomPropertyValues::getCustomPropertyValues($this->getId(), $c_prop->getId());
         if (is_array($values)) {
             foreach ($values as $val) {
                 $cp = new CustomPropertyValue();
                 $cp->setObjectId($new_task->getId());
                 $cp->setCustomPropertyId($val->getCustomPropertyId());
                 $cp->setValue($val->getValue());
                 $cp->save();
             }
         }
     }
     $reminders = ObjectReminders::getByObject($this);
     foreach ($reminders as $reminder) {
         $copy_reminder = new ObjectReminder();
         $copy_reminder->setContext($reminder->getContext());
         $reminder_date = $new_task->getColumnValue($reminder->getContext());
         if ($reminder_date instanceof DateTimeValue) {
             $reminder_date = new DateTimeValue($reminder_date->getTimestamp());
             $reminder_date->add('m', -$reminder->getMinutesBefore());
         }
         $copy_reminder->setDate($reminder_date);
         $copy_reminder->setMinutesBefore($reminder->getMinutesBefore());
         $copy_reminder->setObject($new_task);
         $copy_reminder->setType($reminder->getType());
         $copy_reminder->setUserId($reminder->getUserId());
         $copy_reminder->save();
     }
     return $new_task;
 }