Something wrong when appending object to array for Table View

// Routine.swift:

struct Routine {

    var name: String?
    var desc: String?
}

// RoutineListViewController.swift:

class RoutineListViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {

    var routines = [Routine]()

    override func viewDidLoad() {
        super.viewDidLoad()

        println("There are \(routines.count) routine(s).")

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

        return routines.count
    }

    func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

        let cell = tableView.dequeueReusableCellWithIdentifier("RoutineCell", forIndexPath: indexPath) as UITableViewCell

        var cellName = routines[indexPath.row].name!

        cell.textLabel?.text = cellName

        return cell
    }

    func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {

    }

}

// EditRoutineViewController:

class EditRoutineViewController: UIViewController {

    var newRoutine = Routine(name: "", desc: "")
    var routineName: String?
    var routineDescription: String?

    var allTextFields: UITextField?

    @IBOutlet weak var nameField: UITextField!

    @IBOutlet weak var descriptionField: UITextField!

    override func viewDidLoad() {
        super.viewDidLoad()
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }

    func textFieldShouldReturn(textField: UITextField) -> Bool {

        allTextFields = textField

        if (textField.placeholder == "Name") {

            if (textField.text != nil) {

            routineName = textField.text
            println("Routine name set as '\(routineName)'")
            }

            textField.resignFirstResponder()

            return true

        } else if (textField.placeholder == "Description") {

            if (textField.text != nil) {

            routineDescription = textField.text
            println("Routine description set as '\(routineDescription!)'")
            }

            textField.resignFirstResponder()

            return true
        }

        return true
    }

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

            let navController = segue.destinationViewController as UINavigationController
            let RoutineListController = navController.topViewController as RoutineListViewController

            println("There are \(RoutineListController.routines.count) routines in the routines array.")
            RoutineListController.routines.append(newRoutine)
            println("There are \(RoutineListController.routines.count) routines in the routines array.")
            println("A new routine called \(newRoutine.name!) has been added to the routines array.")
    }

    @IBAction func cancel(sender: AnyObject) {
        allTextFields?.endEditing(true)
        self.dismissViewControllerAnimated(true, completion: nil)
    }

    @IBAction func done(sender: AnyObject) {

        routineName = self.nameField.text
        routineDescription = self.descriptionField.text

        if (self.nameField.text == "") {

            // Display alert view
            let nameAlert = UIAlertController(title: "Oops!", message:
                "Make sure you enter a name for the routine", preferredStyle: UIAlertControllerStyle.Alert)

            nameAlert.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.Cancel, handler: nil))

            self.presentViewController(nameAlert, animated: true, completion: nil)

        } else {

            println("A routine called \(self.routineName!) is about to be created.")

            if (self.routineDescription != nil) {
                println("It has a description of '\(self.routineDescription!)'.")
            }

            var localRoutine = Routine(name: routineName, desc: routineDescription?)

            self.newRoutine = localRoutine

            view.endEditing(true)

            self.performSegueWithIdentifier("showRoutines", sender: nil)
        }
    }
}