'; return [ $fieldId => [ 'code' => $fieldHtml, 'label' => 'Label or LLL:EXT reference', 'type' => 'select', ] ]; } public function validateAdditionalFields( array &$submittedData, SchedulerModuleController $schedulerModule, ): bool { if ($submittedData === []) { return false; } // do some other tests return true; } public function saveAdditionalFields( array $submittedData, AbstractTask $task, ): void { $task->setTaskParameters([ 'someField' => $submittedData['scheduler_myextension_someField'] ?? '', ]); } }