[iOS] Backendless 4.0b14: upload member does not exist.

Dear Backendless support team,

I follow this [url=https://backendless.com/docs/ios/doc.html#files_file_upload]document[/url], but I got an error message "Value of type 'FileService' has no member 'upload' "
Could you tell me why the 'upload' member does not exist.
backendless?.file.upload

Sincerely yours,
Chuck

Hello Chuck

Could you please provide your appId and a code snippet reproducing the problem

Regards Anton

HI Anton,

I know the reason. thanks for your reply.
<img>http://support.backendless.com/public/attachments/e5acb4ebf34a06948e305f088b4e5d61.png&lt;/img&gt;