How to access a SOAP service from Windows Store App using WinJS.xhr?

Question

I want to use the WinJS.xhr method to access a SOAP web service from my JS Windows Store App?

Have tried the following code but it doesn't work. Please help.

var options = {
    url: "http://www.webservicex.net/ConvertTemperature.asmx",
    data: '<?xml version="1.0" encoding="utf-8"?>' +
'<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="'">http://schemas.xmlsoap.org/soap/envelope/">' +
'<soap:Body>' +
'<m:ConvertTemp xmlns:m="'">http://www.webserviceX.NET">' +
'<m:Temperature>37.4</m:Temperature>' +
'<m:FromUnit>degreeCelsius</m:FromUnit>' +
'<m:ToUnit>degreeFahrenheit</m:ToUnit>' +
'</m:ConvertTemp>' +
'</soap:Body>' +
    '</soap:Envelope>'

};

WinJS.xhr(options)
.done(
    function (request) {
        var output = request.responseText;
        xhrDiv.innerHTML = window.toStaticHTML(output);

    },

    function errorfunction(result) {
        xhrDiv.innerHTML = result;
        xhrDiv.style.backgroundColor = "#FF0000";
    },

    function progress(result) {
        xhrDiv.innerText = "Ready state is " + result.readyState;
        xhrDiv.style.backgroundColor = "#0000FF";
    });