UINavigationController problem

Question

Hi,

I have an UINavigationController in Class A, from Class A I navigate to Class B and in Class B I have an UIButton that I want to take you back to Class A all inside the UINavigationController. For some reason it won't do it. I use popToRootViewController method and nothing.

Here's my code: Class A

        ClassB *classB = [[ClassB alloc] initWithNibName:@"ClassB" bundle:nil]; 
    UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:classB];
    self.navigationController.delegate = self;
    [self.navigationController pushViewController:classB animated:YES];
    [navigationController release]; 

Class B

    ClassA *classA = [[ClassA alloc] initWithNibName:@"ClassA" bundle:nil];
    [classA.navigationController popToRootViewControllerAnimated:YES];

Of course I did #import and @class for both classes.

Thanks for helpers