Building iOS App - Failed App Submission

Hi,

We built a mobile app for Android and iOS.

I'm having trouble to submitting my binary for iOS built from Flash Builder 4.7 onto the iTunes Store.

Errors occured during the submission process while authenticating in iTunes Store.

One of the errors is that the app must be built using Xcode 5 and iOS 7 SDK, but I have never built in Xcode before.

Here's a screenshot of the errors I got when trying to submit my binary to iTunes.

Please advise what I can do to upload my binary successfully but building in Flash Builder instead of Xcode.

Please assist urgently.

Thank you.