node.js getting dollar rate

node.js

app.get('/dollarRate', function(request, response) {

var from = "USD"
var to = "BRL"

var url = "http://query.yahooapis.com/v1/public/yql?q=select%20rate%2Cname%20from%20csv%20where%20url%3D'http%3A%2F%2Fdownload.finance.yahoo.com%2Fd%2Fquotes%3Fs%3DUSDBRL%253DX%26f%3Dl1n'%20and%20columns%3D'rate%2Cname'&format=json"

	http.get(url, function(res){
	    var body = '';

	    res.on('data', function(chunk){
	        body += chunk;
	    });

	    res.on('end', function(){
	        var fbResponse = JSON.parse(body);
	        var rate = fbResponse.query.results.row.rate
	        //console.log("Got a response: ", fbResponse.query.results.row.rate);
	        response.send(rate)
	    });
	}).on('error', function(e){
	      console.log("Got an error: ", e);
	});

});