IAP creation - No "Hosted Content"

I'm looking to update one of my older apps in the next week or so and want to implement hosted in app purchases rather than my old server strategy.

According to the docs I'm reading it says this "In the Hosting Content with Apple section of the In-App Purchase Details page, click Yes"; however I can't see that box when I create any new in app purchases. Is there some reason that option is not showing up for me?

Check your paid app contracts ;)

Having a look myself, I can't see the option to turn it on either. But I thought it was worth mentioning as you're updating old apps, this feature is only available on iOS 6 onwards. Just so you're aware!