+1  A: 

Handling SOAP Response

<mx:WebService
      id="userRequest"
       wsdl="http://www.gnpcb.org/esv/share/soap/index.php?wsdl"&gt;

       <mx:operation name="doPassageQuery" resultFormat="object"
            fault="mx.controls.Alert.show(event.fault.faultString)"
            result="showResult(event)"/>
 </mx:WebService>

In the above code you are accessing your SOAP WebService, now you have the resultFormat is an Object and the result function is showResult()

  private function showResult(e:ResultEvent):void 
   {
   trace(e.result);
   }

Resources

http://www.flexlive.net/?p=79

Vinothbabu