Sending request error

[Liaw, Wan-Bih]

Title:

I kept getting status code 500, i.e. server side error, when I did something like the followings. Can someone help?  TIA.

        this._xmlHttp = new ActiveXObject("microsoft.xmlhttp");
        this._serviceUrl = "http://c004266a/soap/rpcrouter";
        this._xmlHttp.Open("POST",this._serviceUrl , false);
        this._xmlHttp.setRequestHeader("Content-Type", "text/xml;  charset=\"utf-8\"  ");
        this._xmlHttp.Send(SOAPRequest);

alert("http status code="+this._xmlHttp.status);