function createSubmittedField($data, $submittedForm, $fieldClass = "SubmittedFileField")
 {
     if (!$_FILES[$this->Name]) {
         return null;
     }
     $submittedField = new $fieldClass();
     $submittedField->Title = $this->Title;
     $submittedField->Name = $this->Name;
     $submittedField->ParentID = $submittedForm->ID;
     // create the file from post data
     $uploadedFile = new File();
     $uploadedFile->set_stat('file_size_restrictions', $this->stat('file_size_restrictions'));
     $uploadedFile->set_stat('allowed_file_types', $this->stat('allowed_file_types'));
     $uploadedFile->loadUploaded($_FILES[$this->Name]);
     $submittedField->UploadedFileID = $uploadedFile->ID;
     $submittedField->write();
     return $submittedField;
 }