title: Mule Global property not being resolved from properties file
body: <p>I try to use global property in mule flow:</p>
  
  <pre><code>    &lt;global-property name="SS_Out" value="${streamserve.dir.outbound}" doc:name="Global Property"/&gt;
      &lt;global-property name="SI_In" value="${sendinvoice.dir.inbound}" doc:name="Global Property"/&gt;
      &lt;global-property name="E2B_In" value="${streamserve.dir.e2boperational}" doc:name="Global Property"/&gt;
  </code></pre>
  
  <p>to get and use these properties in Java code:</p>
  
  <pre><code>       public Object onCall(MuleEventContext eventContext) throws Exception {
  
           MuleMessage message = eventContext.getMessage();
           MuleContext muleContext = eventContext.getMuleContext();
  
           Object originalSSOutputFilePathProperty = muleContext.getRegistry().get("SS_Out");
           Object originalSSInputFilePathProperty = muleContext.getRegistry().get("SI_In");
           Object originalE2BInputFilePathProperty = muleContext.getRegistry().get("E2B_In");
  </code></pre>
  
  <p>but I have got the exception:</p>
  
  <pre><code>java.lang.IllegalArgumentException: Could not resolve placeholder 'streamserve.dir.outbound' in string   
  value "${streamserve.dir.outbound}"
  </code></pre>
  
  <p>Please advice, thanks in advance</p>