UIView AnimateWithDuration and UIViewAnimationOptionTransitionCurlUp

Question

I'm trying to create an unwind segue with the page curl animation. I've followed a tutorial I found only to have the destination view controller call segueForUnwindingToViewController to return an instance of my custom segue class. However, at best it just instantly changes to the appropriate view without a delay or any animation.

Any help would be appreciated.

The contents of perform:

[UIView animateWithDuration:0.5 
                      delay:0.0
                    options:UIViewAnimationOptionTransitionCurlUp 
                 animations:^{} 
                 completion:^(BOOL finished){ 
                     [destinationViewController.view removeFromSuperview];
                     [sourceViewController dismissViewControllerAnimated:NO completion:NULL];
}];