Select2, Ajax and Json issue

Hi,
I’m working on a project. I want to use select2 with json data source. I have a problem with my json structure.
My CODE:HTML:

  <select class="form-control form-control-lg" id="pt" name="SNA" required> </select>

jQuery:

	function formatPT (pt) {
    if (!pt.id) {
    return pt.text;
    }
	//sername
	$("#ptsername").val(pt.text);
	if (pt.ic === 1){
	var $container = $(
    "<div class='select2-result-pedra clearfix'>" +
    "<div class='select2-result-pedra-pt text-success'></div>" +
    "</div>"
    );
	$container.find(".select2-result-pedra-pt").text(pt.text);
	return $container;
    } else {
		var $container = $(
    "<div class='select2-result-pedra clearfix'>" +
    "<div class='select2-result-pedra-pt text-danger'></div>" +
    "</div>"
    );
	$container.find(".select2-result-pedra-pt").text(pt.text);
	return $container;	
	}
    };
	 $("#pt").select2({
	    placeholder: 'Select a Service',
           language: "fa",
	    multiple: false,
	    allowClear: true,
	    dropdownAutoWidth: false,
	    dir: "rtl",
		templateSelection: formatPT,
		minimumInputLength: 2,
		language: {
            searching: function () {
            return "Searching...";
          },
		    inputTooShort: function () {
            return "enter at least 2 characters to start...";
          }
        },
        ajax: {
                url: '/ssoservices.php',
                dataType: 'json',
				type: "POST",
                delay: 250,
                data: function (params) {
                    return {
                        search: params.term,
						ServiceType: 13
                    };
                },
       processResults: function(res) {
           return {
               results: $.map(res.data.list, function(item) {
                   return {
                       text: item.srvName,
                       id: item.srvId,
		      ic: item.srvBimSw
                   }
               }),
           };
       },
       cache: false
   }
    });

My Json structure: (ssoservices.php):

{
  "status": 200,
  "family": "SUCCESSFUL",
  "reason": "OK",
  "data": {
    "list": [
      {
        "srvId": 61415,
        "srvType": {
          "srvType": "17",
          "srvTypeDes": "Misc.",
          "status": "1",
          "statusstDate": "13940101",
          "custType": "1"
        },
        "srvCode": "830004",
        "srvName": "Service ONE",
        "srvBimSw": "1",
        "srvSex": null,
        "srvPrice": 0,
        "srvPriceDate": "13990101",
        "doseCode": null,
        "formCode": null,
        "parTarefGrp": null,
        "status": "1",
        "statusstDate": "13990101",
        "bGType": null,
        "gSrvCode": null,
        "agreementFlag": null,
        "isDeleted": "0",
        "visible": "1",
        "dentalServiceType": "2",
        "wsSrvCode": "0000830004"
      },
      {
        "srvId": 61414,
        "srvType": {
          "srvType": "17",
          "srvTypeDes": "Misc.",
          "status": "1",
          "statusstDate": "13940101",
          "custType": "1"
        },
        "srvCode": "830003",
        "srvName": "Service TWO",
        "srvBimSw": null,
        "srvSex": null,
        "srvPrice": 248500,
        "srvPriceDate": "13990201",
        "doseCode": null,
        "formCode": null,
        "parTarefGrp": null,
        "status": "1",
        "statusstDate": "13990201",
        "bGType": null,
        "gSrvCode": null,
        "agreementFlag": null,
        "isDeleted": "0",
        "visible": "1",
        "dentalServiceType": "2",
        "wsSrvCode": "0000830003"
      }
    ],
    "total": 2
  }
}

MY PROBLEM:
I want to set the “srvId” as the id of select option?! I can’t set it? What’s wrong with my code?Thanks

You may read The Select2 data format.