'[atum-order-date-created]'); public $display_name = 'Atum order date created'; public function getValue($post, $field) { $field['value'] = '_date_created'; $value = date_create($this->getCustomFieldsValues($post, $field)); return isset($field['args']['format']) ? $value->format($field['args']['format']) : $value->format('Y-m-d H:i:s'); } }