ios three20 animation on back

i'm using the three20 lib and in depth ttnavigator: my question is this: with this code I change the animation to go in the new navigation:

TTURLAction* action;
action = [TTURLAction actionWithURLPath:@"tt://events"]; 
[action setAnimated:YES];
[action setTransition:UIViewAnimationTransitionFlipFromLeft];
[[TTNavigator navigator] openURLAction:action];

and the animation is good, but when in the new view I click the back button, the animation is the standard scroll...it's possible mantain the same?

thanks in advance

If you declare the URL in the TTURLMap, three20 will do that automatically when you dismiss your view controller:

in your app delegate:

TTNavigator* navigator = [TTNavigator navigator];
navigator.persistenceMode = TTNavigatorPersistenceModeNone;
TTURLMap* map = navigator.URLMap;

[map from:@"tt://settings" toViewController:[SettingsController class] transition:UIViewAnimationTransitionFlipFromLeft];

[navigator openURLAction:[TTURLAction actionWithURLPath:@"tt://settings"]];

and in your settings controller, you can use a custom button, so it won't look as a back button:

///////////////////////////////////////////////////////////////////////////////////////////////////
- (void)viewDidLoad {
  [super viewDidLoad];


   TTButton* settingsButton = [TTButton 
                          buttonWithStyle:@"grayToolbarButton:" 
                          title:NSLocalizedString(@"DONE", @"")];
    [settingsButton sizeToFit];

     [settingsButton addTarget:self action:@selector(dismissSettings)
       forControlEvents:UIControlEventTouchUpInside]; 

 self.navigationItem.hidesBackButton = YES;
 self.navigationItem.rightBarButtonItem = [[[UIBarButtonItem alloc] 
                                        initWithCustomView:settingsButton] autorelease];
}


 ///////////////////////////////////////////////////////////////////////////////////////////////////
- (void)dismissSettings {
  [self.navigationController popViewControllerAnimated:YES];
}