How Do I Unlock An In-App Purchase Item After It Has Been Purchased?

I have everything setup, and the In-App Purchase items are being saved but when the item is purchased on the MasterViewController and I return to the ViewController, the IAP item is not unlocked in a sense. If I quit the app and reopen it, the IAP item is unlocked. Thats obviously a hassle for users to have to purchase and item, close the app and reopen it for it to be unlocked.

Any help would be greatly appreciated!

Thanks

via Chebli Mohamed