Hello, Im trying to add a animation to a UIImageView, but it always fails. Why? Here is the code:

    UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();    
    animationImage = [[UIImageView alloc]initWithImage:newImage];
    [self.view addSubview:animationImage];

    CATransition *animation = [CATransition animation];
    [animation setDelegate:self];
    [animation setDuration:0.35];
    [animation setTimingFunction:UIViewAnimationCurveEaseInOut];
    animation.type = @"pageCurl";
    animation.fillMode = kCAFillModeForwards;
    animation.endProgress = 0.58;
    [animation setRemovedOnCompletion:NO];
    [[animationImage layer] addAnimation:animation forKey:@"pageCurlAnimation"];