[JavaScript][AJAX]Przekazywanie danych z API do innej funkcji, JSON API Opcje

[Twist]

Mam nastepuajcy problem:

Pobieram dane z JSON API, alertuje je - dziala tak jak chce.
Gdy przekazuje je do populateAvailability() to pierwszy parametr przekazuje wszytskie dane na raz, a 3 pozostale sa puste.
Dlaczego tak jest? I czy robie to poprawnie?

[PHP] pobierz, plaintext 
function populateAvailability(Date, RoomTypeCode, ContractCode, Quantity) {
     $("#result").append("Date: " + Date + "<br /> Room: " + RoomTypeCode + "<br /> Contract: " + ContractCode + "<br /> Quantity: " + Quantity + "<br /><br /><br />");
 }
 
function getContract(yourAPIKey, contractCode, startDate, endDate) {
    var availabilityEnquiry = "http://apiurl/api/availability?apiKey=" + yourAPIKey + "&contractCode=" + contractCode + "&startDate=" + startDate + "&endDate=" + endDate;
    //alert(availabilityEnquiry);
    //var APICallback = callApiForContract();
    //populateAvalaiability(APICallback);
    $.ajax({
 
        url: availabilityEnquiry,
        type: 'GET',
        dataType: "jsonp",
        jsonp: "callback",
        jsonpCallback: "jsonpCallback3",
        complete: function (response, responseCode) {
            //console.log(response); console.log(responseCode);
            //alert("complete");           
        },
        success: function (json) {
            $.each(json, function (index, value) {
                populateAvailability(this.Date + this.RoomTypeCode + this.ContractCode + this.Quantity);
                alert("this.Date : " + this.Date); // tutaj pokazuje porawnie pobrana date
                alert("this.RoomTypeCode : " + this.RoomTypeCode); // tutaj rodzaj pokoju - ok
                alert("this.ContractCode : " + this.ContractCode); - tez ok
                alert("this.Quantity : " + this.Quantity); - tez ok
 
            });
        }
    });
}
 
 
 
var startDate = "2012-07-23";
var endDate = "2012-07-30";
 
function getHotelInfo(yourAPIKey) {
 
 var enquiry = "url" + yourAPIKey;
 //alert(enquiry);
 $.ajax({
 
     url: enquiry,
     type: 'GET',
     dataType: "jsonp",
     jsonp: "callback",
     jsonpCallback: "jsonpCallback2",
     complete: function (response, responseCode) {
         //console.log(response); console.log(responseCode);
         //alert("complete");           
     },
     success: function (json) {
         $.each(json.Contracts, function (index, contract) {
             getContract(yourAPIKey, contract.ContractCode, startDate, endDate);
 
         });
 
     }
 });
}
[PHP] pobierz, plaintext