Web service call using javascript

Hi All,

I am working on web service call using javascript. I used below code while calling web service on click event of button.

var e;
try
{

     var oListURL = "http://www.webservicex.net/CurrencyConvertor.asmx?WSDL";
     SOAP.wireDump = true;
     var service = SOAP.connect(oListURL);
     xfa.host.messageBox(service.toString());

     if(typeof service != "object")
     {

          xfa.host.messageBox("Couldn't connect to " + oListURL);

     }
     
     if(!service.ConversionRate(138,56))
     {
          xfa.host.messageBox("The ConversionRate method does not exist on the service at " + oListURL);
     }
     //call the service

     var svcResponse = service.ConversionRate(138,56);

     xfa.host.messageBox(svcResponse.toString());
     if(!svcResponse)
     {

          xfa.host.messageBox("The service returned nothing");

     }

   
}

catch(e)

{

     xfa.host.messageBox("Exception: " + e);

}

I do not get any response for it. I always get "0" as response.

How do i passed session id to soap header while calling web service in designer??

Is there any other adobe javascript with which i can call web service as well as i may able to provide session id to its soap header.

Request you all to share any information regarding this.

Thanks in advance.

Regards

Abhishek