Error 500 on oXmlHTTP.Send - Javascript

I figured out the problem. The parameter name on the service didn't match
that on xmlhttp.send. Specifically, the second parameter.
"RG" <nobody@nowhere.com> wrote in message
news:uOoiyaFbGHA.3376@TK2MSFTNGP05.phx.gbl...
>I have an aspx web pages which interacts with an asmx service. The calls
>to
> web service are done via Javascript.
>
> The asmx service method has the following parameters:
>
> public string RetrieveContact(string Id, int EntityTypeCode)
>
>
> I am getting the following error when executing
> oXmlHTTP.Send("id=" + sId + "&ObjectTypeCode=" + sObjectTypeCode);
>
> which resolves into
>
> oXmlHTTP.Send("id=7AA4FB86-24D6-DA11-B240-000F20F62526&ObjectTypeCode=1");
>
>
>
> responseText "System.InvalidOperationException: Missing parameter:
> EntityTypeCode.
> at
> System.Web.Services.Protocols.ValueCollectionParameterReader.Read(NameValueCollection
> collection)
> at
> System.Web.Services.Protocols.HtmlFormParameterReader.Read(HttpRequest
> request)
> at System.Web.Services.Protocols.HttpServerProtocol.ReadParameters()
> at System.Web.Services.Protocols.WebServiceHandler.Invoke()
> at System.Web.Services.Protocols.WebServiceHandler.CoreProcessRequest()
> " String
>
> Would anyone know how to resolve this.
>
> Thanks in advance
>
>
>
>