title: Setting drop down value in unity with a string
body: <p>Does anyone know how to <strong>set</strong>  the dropdownUI value with a string in unity?
  <br>
  I know how to set it up with an int like these</p>
  
  <pre><code>public DropDown dropdown;
  
  dropdown.value = 1;
  </code></pre>
  
  <p>However, what I want is to set the value with a given string.</p>
  
  <p>Something like:</p>
  
  <pre><code>dropdown.value = "an Option";
  </code></pre>