Updating the badge number in a UITabBarItem - ios

Question

I'm developing a iOS app that manage Push Notifications. When a push comes up, the app badge is looking good, but where I'm having trouble is on the badges that appear inside the app. With inside the app i mean in the UITabBarItems that the app manages.
The app has a TabBarController where in two UITabBarItems a badge has to increment depending on wich Push Notification appeared. That is correctly handled in the server side, as I debuged and the push badge numbers comes ok. The thing is that the tab bar items are not updating ok.
Here's some part of my code:
This all happens inside de AppDelegate.m
- (BOOL)application:(UIApplication *)application willFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
NSString *user = [defaults stringForKey:#"id"];
if (user){
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"MainStoryboard" bundle: nil];
UIViewController *viewController = [storyboard instantiateViewControllerWithIdentifier:#"tabbar"];
self.window.rootViewController= viewController;
}
return YES;
}
And here's where I handle the push and update the badges in the uitabbaritem:
-(void)application:(UIApplication *)application
didReceiveRemoteNotification:(NSDictionary *)userInfo
fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler {
// Notify UAInbox to fetch any new messages if the notification
// contains a rich application page id.
if (application.applicationState != UIApplicationStateBackground) {
UA_LINFO(#"Received remote notification: %#", userInfo);
[[NSNotificationCenter defaultCenter] postNotificationName:#"refreshRequests" object:nil];
NSString* type = [userInfo objectForKey:#"type"];
if ([type isEqualToString:#"s"]){
[[[[(UITabBarController*)self.window.rootViewController viewControllers]
objectAtIndex: 2] tabBarItem] setBadgeValue:[[userInfo objectForKey:#"particularBadge"] stringValue]];
}else{
[[[[(UITabBarController*)self.window.rootViewController viewControllers]
objectAtIndex: 0] tabBarItem] setBadgeValue:[[userInfo objectForKey:#"particularBadge"] stringValue]];
}
}else{
// Notify UAPush that a push came in with the completion handler
[[UAPush shared] handleNotification:userInfo
applicationState:application.applicationState
fetchCompletionHandler:completionHandler];
}
[[NSNotificationCenter defaultCenter] postNotificationName:#"refreshRequests" object:nil];
[self clearNotifications];
}
When I debug it, the badge in [[userInfo objectForKey:#"particularBadge"] stringValue] is 1 for example, but when the code finished passing over there the uitabbaritem doesn't update. Sometimes it works ok, but others it doesn't and I can't figure out why.
When the app launches it asks if the user is logged..If not the self.window.rootviewController is a LoginViewController. I don't know if this information should be important.
Any help would be appreciated!