title: How to use in operator in camel simple xml dsl?
body: <p>I am using Camel 2.17.0. I have a need to use in operator in the simple language in the blueprint.xml file as the following </p>
  
  <p><code>&lt;choice id="_choice3"&gt;
                          &lt;when id="_when3"&gt;
                              &lt;simple&gt;${header.STATUS} in 'Draft,Review'&lt;/simple&gt;
                              ......</code><br/><br/>
  However, It doesn't work and throws following exception:</p>
  
  <p>org.apache.camel.CamelExecutionException: Exception occurred during execution on the exchange: Exchange[ID-A5668784-61983-1579873128661-9-6]
      at org.apache.camel.util.ObjectHelper.wrapCamelExecutionException(ObjectHelper.java:1706)
      at org.apache.camel.builder.SimpleBuilder.createPredicate(SimpleBuilder.java:104)
      at org.apache.camel.builder.SimpleBuilder.matches(SimpleBuilder.java:83)</p>
  
  <p>By the way, I have been using choice/when condition for a long time. Then I tried to use || and or operator as followings: </p>
  
  <pre><code>&lt;simple&gt;(${header.STATUS.contains("Draft")} or ${header.STATUS.contains("Review")})&lt;/simple&gt;
  &lt;simple&gt;(${header.STATUS} contains 'Draft' || ${header.STATUS} contains 'Review')&lt;/simple&gt;
  &lt;simple&gt;(${header.STATUS} contains 'Draft' or ${header.STATUS} contains 'Review')&lt;/simple&gt;
  </code></pre>
  
  <p>In all cases, it throws the same exception. Please help. Thanks in advance</p>