$form->setValueByElement('end_date', $period->getEndDate());
$form->setValueByElement('chclient', '1');
$form->setValueByElement('chinvoice', '0');
$form->setValueByElement('end_date', $period->getEndDate());
$form->setValueByElement('chclient', '1');
$form->setValueByElement('chinvoice', '0');