I use this code to jump between two storyboard and it's success.
var sb = UIStoryboard(name: “storyboardbName”, bundle: nil)
var viewctrl = sb.instantiateViewControllerWithIdentifier(“a-view”) as! UIViewController
self.navigationController?.pushViewController(viewctrl, animated: true)
But how can i pass value to the other storyboard? When i use only one storyboard before,i can set segue to pass value but use to storyboard,there is no segue can set.