title: change an image of a particular button with multiple instances of the same button
body: <p>i am making a small iOS game that has many instances of a button on the same view. the view is filled with buttons using the image of a bubble.</p>
  
  <p>i need to be able to change the image of one of these buttons when it is tapped and change it back after 5 seconds however i have absolutely no idea how to do it D:</p>
  
  <p>could someone suggest a possible solution please?</p>