title: SpelEvaluationException: EL1007E '@' not well managed when trying to develope a dialog answering with 'emails'
body: <p>I'm writing a Dialog that identifies some required capabilities and provides as output the name and the email of the person having those capabilities.</p>
  
  <p>I wrote a dialog node that provides an output like this: <code>"The person you are looking for is name-surname and the email is xxxxx@yyyy.com"</code> , but if I run it I receive the following error <code>"SpelEvaluationException: EL1007E"</code></p>
  
  <p>The error disappear when replacing the <code>'@'</code>  in the answer with any other character</p>
  
  <p>I also tried to build a context variable containing the email and building the answer using the variable but the error is the same.</p>
  
  <p>Any suggestion?
  Thanks</p>