protocols & viewControllers, passing info using protocols on the same action Func Swift 3 & 4 - swift

Question

I have this code to pass info between viewControllers using protocols, I have my models and with the first protocol work perfectly but the second one I have some issues, the data pass nil, or do nothing, already use tabBarController & UINavigationBar... the protocols... I create one in my ViewController(RecordViewController) and have the button & action and one protocol, this is:
protocol RecordViewProtocol {
func newTrackInstrument(item: SampleCarouselsRecord)
func newInstrumentTrackCell(item: SampleTrackCellRecord)
}
extension RecordViewController: RecordViewProtocol {
func newTrackInstrument(item: SampleCarouselsRecord) {
self.sampleCarouselItemsRecord.append(item)
let indexOnPath = NSIndexPath(row: self.sampleCarouselItemsRecord.count - 1, section: 0)
self.instrumentCarousel.insertItems(at: [indexOnPath as IndexPath])
}
func newInstrumentTrackCell(item: SampleTrackCellRecord) {
self.sampleTrackRecord.append(item)
let indexOnPath = NSIndexPath(row: self.sampleTrackRecord.count - 1, section: 0)
self.trackInstrument.insertItems(at: [indexOnPath as IndexPath])
}
}
the other protocol, on another ViewController(MixerViewController):...
protocol MixerViewProtocol {
func newCarouselItem(item: SampleCarouselMixer)
}
extension MixerViewController: MixerViewProtocol {
func newCarouselItem(item: SampleCarouselMixer) {
self.sampleCarouselMixer.append(item)
let indexOnPath = NSIndexPath(row: self.sampleCarouselMixer.count - 1, section: 0)
self.mixerCarouselInstrument.insertItems(at: [indexOnPath as IndexPath])
}
}
so, when wanna go the view and put the info to my models.. I put this code in the action Button to go into the view where is the function to put the info models:
#objc func goToAddView() {
let addTrackViewController = AddNewTrackView()
let addTrackView = UINavigationController(rootViewController: addTrackViewController)
addTrackViewController.recordViewControllerProtocol = self as RecordViewProtocol
present(addTrackView, animated: true, completion: nil)
}
and work good with the first protocol.. but with to the other protocol nothing.. I don't know why or I don't know wath I have to do... look, I have the delegate protocols inside on the AddNweTrackView:
var recordViewControllerProtocol: RecordViewProtocol?
var delegateMixerView: MixerViewProtocol? <- this is I think, put into the action button like the firstone:
here on the same action where the first protocol already is
#objc func goToAddView() {
let addTrackViewController = AddNewTrackView()
let addTrackView = UINavigationController(rootViewController: addTrackViewController)
addTrackViewController.recordViewControllerProtocol = self as RecordViewProtocol
addTrackViewController.delegateMixerView = MixerViewController.self as? MixerViewProtocol
present(addTrackView, animated: true, completion: nil)
}
but return nil... and I try with diferents forms.. I try put this:
let mixerViewController = MixerViewController()
addTrackViewController.delegateMixerView = mixerViewController as? MixerViewProtocol
and try with this but the error Is obvious:
addTrackViewController.delegateMixerView = self as MixerProtocol
and the same... I think, here at this point, it's where Im failing .. someone can help?