title: Passing variables between View Controllers using a segue
body: <p>I use Swift and Xcode 6 and  would like to pass a variable from one View Controller to another using a Segue.</p>
  
  <p>I have created a segue called 'MainToTimer' which is trigger once button is pressed. I would like to be able to use the variable called 'Duration' on the second View Controller.</p>
  
  <p>Is it possible to pass multiple variables and constants?</p>
  
  <p>What code do I need associated to each View Controller? </p>
  
  <p>Thank you in advance. </p>