Yahoo Currency API Java multiple currency requests

Question

I'm having trouble grabbing multiple currencies at once from yahoo, the code produces the first request but not the second.

public double getRate(String from1, String to1, String from2, String to2) {

    try {
        URL url = new URL("http://quote.yahoo.com/d/quotes.csv?f=l1&s=" + from1 + to1 + "=X," + from2 + to2 + "=X");
        BufferedReader reader = new BufferedReader(new InputStreamReader(url.openStream()));

        String line = reader.readLine();
        if (line.length() > 0) {
            return Double.parseDouble(line);
        }

        reader.close();
    } catch (IOException | NumberFormatException e) {
        System.out.println(e.getMessage());
    }

    return 0;
}

Any thoughts would be appreciated.

Best