title: Extract all values between { dynamic } and place in a string array
body: <p>I need to extract all words between { } brackets and place in a string array.
  The problem is that the text between the brackets is dynamic.</p>
  
  <p>For example:</p>
  
  <p>Hi {name}, thanks for visiting {site}</p>
  
  <p>In this text i want to get name and site words place in a array.</p>
  
  <p>Thanks!</p>