title: Can pass data between View Controllers but Tab bar disappears
body: <p>I have a Tabbed App with two tabs... the first tab has the main Action, and the second has Settings that can be updated. I am trying to pass some variables data from Settings to the Action tab. Based on some suggestions, I have used the following code for the Update button:</p>
  
  <pre><code>@IBAction func updateBut(_ sender: Any) {
  
      let myVC = self.storyboard?.instantiateViewController(withIdentifier: "FirstViewController") as! FirstViewController
      myVC.totTime = totalTime
      myVC.timeInt = intTime
      self.present(myVC, animated: true, completion: nil)
  }
  </code></pre>
  
  <p>The data does pass to the first view controller, however, the tabs have disappeared on this view now. So, how can I get the tabs back on the screen? I am quite the beginner to any form of app development, and am just trying to learn by doing... the Tabbed App has been created using one of the Xcode New Project templates. Thanks. </p>