json - GCM push different payload to different device -

i push different payload differet devices @ same time. able push same payload different devices code below.

    string stringregids = null;      list<string> regids = new list<string>();      //add regid list      stringregids = string.join("\",\"", regids.toarray());;      string applicationid = "appid";       string sender_id = "senderid";      string value = "hello";                                                                                 webrequest trequest;      trequest = webrequest.create("https://android.googleapis.com/gcm/send");      trequest.method = "post";      trequest.contenttype = " application/json;charset=utf-8";      trequest.headers.add(string.format("authorization: key={0}", applicationid));      trequest.headers.add(string.format("sender: id={0}", sender_id));      string postdata = "{\"collapse_key\":\"score_update\",\"time_to_live\":108,\"delay_while_idle\":true,\"data\": { \"message\" : "                       +"\""+value+"\",\"time\": "+"\""+system.datetime.now.tostring()+"\"},\"registration_ids\":[\""+stringregids+"\"]}";                                                                                                                                       byte[] bytearray = encoding.utf8.getbytes(postdata);      trequest.contentlength = bytearray.length;      stream datastream = trequest.getrequeststream();      datastream.write(bytearray, 0, bytearray.length);      datastream.close();      webresponse tresponse = trequest.getresponse();      datastream = tresponse.getresponsestream();      streamreader treader = new streamreader(datastream);      string sresponsefromserver = treader.readtoend();      treader.close();     datastream.close();     tresponse.close(); 

is there solution send multiple payload multiple devices?

there no shortcut sending different payloads different devices. you'll have send each message in separate http request. each request contain single registration id.