EKEventEditViewController don't work with Gradient

[NorbertSzydlowski]

It is possible using gradient in this case?

EKEventEditViewController *controller2 = [[EKEventEditViewController alloc] initWithNavigationBarClass:[CRGradientNavigationBar class] toolbarClass:nil];

UIColor *firstColor = [UIColor colorWithRed:255.0f/255.0f green:42.0f/255.0f blue:104.0f/255.0f alpha:1.0f];
UIColor *secondColor = [UIColor colorWithRed:255.0f/255.0f green:90.0f/255.0f blue:58.0f/255.0f alpha:1.0f];
NSArray *colors = [NSArray arrayWithObjects:firstColor, secondColor, nil];

[[CRGradientNavigationBar appearance] setBarTintGradientColors:colors];
[[controller2 navigationBar] setTranslucent:NO];