Android : while send the request to use my app via facebook sdk I'm sending request id to my server but It send only single id?

enter code here

this is my source code to send the request id to my server link. when i send request to single friend this will show id but when i send the request to multiple friends even then it shows single requestid, Thanks in advance. please help me.

enter code here

package com.ballerxtreme;

import java.util.ArrayList;
import java.util.List;

import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.os.AsyncTask;
import android.util.Log;

public class Send_request_id extends AsyncTask<String, String, JSONObject> {
Activity activity;
String request_id;
String json_send;
JSONParser jp = new JSONParser();

public Send_request_id(Activity activity, String request_id)

{
    this.activity = activity;
    this.request_id = request_id;
}

@Override
protected void onPreExecute() {

    super.onPreExecute();
}

@Override
protected JSONObject doInBackground(String... params) {

    // String url = "http://jstarfitness.com/service/saveuser.php";
    String url = "http://www.jstarfitness.com/service/requestweb.php";
    ProcessingHTTPPostServices parser = new ProcessingHTTPPostServices();
    List<NameValuePair> param = new ArrayList<NameValuePair>();
    param.add(new BasicNameValuePair("requestid", request_id));
    json_send = parser.makeHttpRequest(url, "post", param);
    JSONObject jobj = null;
    try {

        jobj = new JSONObject(json_send);

    } catch (JSONException e) {

        e.printStackTrace();
        String io = e.getMessage();
        Log.e("error", io);

    }
    return jobj;
}

@Override
protected void onPostExecute(JSONObject result) {

    Log.e("Id_Send", json_send);

    super.onPostExecute(result);
}

}