I have a question about xcode7.x Swift. (Error while using Structure and Array)

struct Zone {
        var name : String
        var controller : [controllerType]

        enum controllerType {
            case LG_TV
            var typeTitle : String {
                get {
                    let titleString : String
                    switch self {
                    case .LG_TV:
                        titleString = "LG TV"

                    }
                    return titleString
                }
            }
        }
    }

    var Room1 = Zone(name : "ROOM1", controller : [.LG_TV, .LG_TV, .LG_TV])
    var Room2 = Zone(name : "ROOM2", controller : [])
    var Room3 = Zone(name : "ROOM3", controller : [])

    var Zones : [Zone] = [] 

    override func viewDidLoad() {
        super.viewDidLoad()

        Zones = [Room1, Room2, Room3]

        print(Zones)  
        //or 
        Zones.append(Room1)
        Zones.append(Room2)
        Zones.append(Room3)

        print(Zones)
    }