if (($schoolContractBegin = trim($Document->getValue($Document->getCell($Location['Schulvertrag Beginn'], $RunY)))) != '') {
                                    try {
                                        $beginDate = date('d.m.Y', \PHPExcel_Shared_Date::ExcelToPHP($schoolContractBegin));
                                    } catch (\Exception $ex) {
                                        $beginDate = '';