在php android中传递2个变量

Good day, I have a php code that has a $_POST['Query'] function, i want to add it with $_POST['Tags'] but how can I pass 2 variables in android using to php, I had pass the a value to a $_POST['Query'] with my code but how can I pass the second one ?

OutputStream os = con.getOutputStream();
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(os, "UTF-8"));
        String data = URLEncoder.encode("Query", "UTF-8")+"="+URLEncoder.encode(query,"UTF-8");
        bw.write(data);
        bw.flush();

        con.connect();

        bw.close();
        os.close();

Simply append another parameter with &

String data = URLEncoder.encode("Query", "UTF-8")+"="+URLEncoder.encode(query,"UTF-8");
       data+= "&"+URLEncoder.encode("Tags", "UTF-8")+"="+URLEncoder.encode(yourTags,"UTF-8");

Note : For efficiency use StringBuilder

StringBuilder params = new StringBuilder();
params.append(URLEncoder.encode("Query", "UTF-8")+"="+URLEncoder.encode(query,"UTF-8"));
params.append("&");
params.append(URLEncoder.encode("Tags", "UTF-8")+"="+URLEncoder.encode(yourTagStr,"UTF-8"));
bw.write(params.toString());
// ... code