Swift在标签栏之间传递变量

Question

我想将数据从一个标签栏发送到第二个标签栏。我该怎么做呢？ Prepareforsegue？这是我尝试过的：

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?){

    var tabBarController = segue.destinationViewController as UITabBarController

    var playerStats = tabBarController.viewControllers?[1] as TabBarTwoViewController

    playerStats.test = 12

}