title: XLForm push selector not working and selector options not being saved as string values
body: <p>I am using the XLForm and have no issues with most of the category types except for the selector option type. I want to have my selector be a push type selector and the option to be saved as a string value.</p>
  
  <p>The push selector type is not working (I changed to XLFormRowDescriptorTypeSelectorAlertView for testing purposes, and it is working).</p>
  
  <p>Right now, the selector is returning 0x15d50f70 (I believe is an object) and I'm getting the following crash *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[XLFormOptionsObject copyWithZone:]: unrecognized selector sent to instance 0x15d50f70</p>
  
  <p>I've tried playing around with the different methods from here <a href="http://cocoadocs.org/docsets/XLForm/2.1.0/Classes/XLFormOptionsObject.html" rel="nofollow">http://cocoadocs.org/docsets/XLForm/2.1.0/Classes/XLFormOptionsObject.html</a> and googling around, but I can't figure this out. Thanks in advance!</p>
  
  <p><strong>EDIT:</strong> I got the push selector type working by creating a new vc and making a subclass of XLFormOptionsViewController. Still no luck in getting the string value of the option through.</p>