getActiveSheet(); $dataSet = [ [7, 'x', 5], ['=', '=FORMULA'], ]; $worksheet->fromArray($dataSet, null, 'A1'); $spreadsheet->addDefinedName(new NamedRange('FIRST', $worksheet, '$A$1')); $spreadsheet->addDefinedName(new NamedRange('SECOND', $worksheet, '$C$1')); $spreadsheet->addDefinedName(new NamedFormula('FORMULA', $worksheet, '=FIRST*SECOND')); $reloaded = $this->writeAndReload($spreadsheet, 'Ods'); self::assertSame(7, $reloaded->getActiveSheet()->getCell('FIRST')->getValue()); self::assertSame(5, $reloaded->getActiveSheet()->getCell('SECOND')->getValue()); self::assertSame(35, $reloaded->getActiveSheet()->getCell('B2')->getCalculatedValue()); } }