I have two screens. From first screen to next screen I was connect `push` segue in storyboard. Now in my second screen one alert will show with ok button. after pressing ok button i need to go to my first screen

Here is my code:

```
- (void)signup:(NSDictionary *)params {
    if (error)
    {
        [PCUtilities showAlertWithTitle:@"Oops" message:error.localizedDescription cancelButtonTitle:@"ok"];
    }
}

```

Inside one method I have `UIAlert`.

This below code I tried but not working!!

```
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
    NSString *title = [alertView buttonTitleAtIndex:buttonIndex];
    if([title isEqualToString:@"ok"])
    {
        [self.navigationController pushViewController:[self.storyboard instantiateViewControllerWithIdentifier:@"AppMainNavController"] animated:YES];
    }
}

```

`AppMainNavController` = is my navigation controller story board id