ios - Google Admob Test Device Error -

i new adding ads mobile apps , getting started google tutorial on adding admob ios app. i've followed instructions running error when building app. have 1 interstitial ad showing on app users. using publisher id google admob. here code:

//  viewcontroller.swift //  tic tac toe //  created benjamin emdon on 2015-05-20. //  copyright (c) 2015 ben emdon. import uikit  import googlemobileads  class viewcontroller: uiviewcontroller {  @iboutlet weak var bannerview: gadbannerview!  @iboutlet var singleplayerbutton: designablebutton! @iboutlet var multiplayerbutton: designablebutton!  override func viewdidload() {     super.viewdidload()      self.bannerview.adunitid = "ca-app-pub-6066036695047095/8503439166"      self.bannerview.rootviewcontroller = self      let request: gadrequest = gadrequest()      self.bannerview.loadrequest(request.testdevices = ["9dbd8b758950edd3a2ca208ce50bcca3"])          }  override func viewwillappear(animated: bool) {      singleplayerbutton.animation = "slideright"     singleplayerbutton.animate()     multiplayerbutton.animation  = "slideleft"     multiplayerbutton.animate()  }  } 

i receive error on line testdevice number is. here error given: cannot convert value of type '()' expected argument type 'gadrequest!'

try changing code to:

let request: gadrequest = gadrequest() request.testdevices = ["9dbd8b758950edd3a2ca208ce50bcca3"] self.bannerview.loadrequest(request) 

you making assignment in function call, should , pass request object in