title: Can't use methods from RectTransformUtility
body: <p>I wanted to use <code>RectTransformUtility.ScreenPointToLocalPointInRectangle()</code> to implement a virtual trackbad on the touchscreen. <br/>
  So I typed <code>RectTransformUtility.</code> into my code and hit autocomplete. Nothing happens.<br/>
  I wanted to be sure so I wrote the entire method call by hand <code>RectTransformUtility.ScreenPointToLocalPointInRectangle(socket.rectTransform, ped.position, ped.pressEventCamera, out position);</code> but now I get a compiler error. <br/>
  He does find <code>RectTransformUtility</code> tho, just not its methods. <br/>
  <a href="https://i.stack.imgur.com/Y81OK.jpg" rel="nofollow noreferrer">Code and errors)</a> (sorry that the error messages are in German)<br/>
  I'm not 100% sure what socket and ped are but they should work since they are part of the code I got from uni as part of the exercise. <br/>
  Does anybody know what might cause this problem?</p>