Click a Tab Menu item to launch TTPostController, TTEmailController or a delegate

Question

How to set the 5th Tab menu item (Tab Bar) to execute a method using its delegate like the following:

[map from:@"tt://joinGame" toObject:self selector:@selector(launchGame)];

or to go to the post controller directly if the Tab item is clicked

[map from:@"tt://suggest" toViewController:[TTPostController class]];

I tried the following but it didnt work:

- (void)viewDidLoad {
   [self setTabURLs:[NSArray arrayWithObjects:@"tt://menu/1",
   @"tt://menu/2",
   @"tt://menu/3",
   @"tt://suggest",
   @"tt://joinGame",
     nil]];
}

What to set the self.dataSource to in the MenuController since i dont want to show any tables and just want to execute either Post, Mail, or the app delegate?