soapUI with Adobe Flex

<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" 
 creationComplete="onCreationComplete()"
 >
 <mx:Script>
  <![CDATA[
   public function onCreationComplete() : void
   { 
    userRequest.GetUserInfo("myuser","mypassword");
    
    // --> where: 
    // --> userRequest is a reference to the WebService component
    // --> GetUserInfo is the name of the Function on the server    
   }     
   public function onResult(event : Event) : void
   {
    //--> It gets here if it got an answerd from server
    trace("");
   }   
  ]]>
 </mx:Script> 
 <mx:WebService id="userRequest" 
  wsdl="http://localhost:8088/mockMBS5_x0020_Online_x0020_Web_x0020_ServiceSoap?WSDL" 
  result="onResult(event)" 
 /> 
</mx:Application>