Unity - Transfer Values Infotable via Thingworx Service

Hello Community,

I hope my English is sufficient to explain my Problem.

I developed an App in Unity to transfer Data/Information about Test Parts for my Masterthesis and I am nearly finished.

I have only one Problem to transfer Data from my Unity App to our ThingWorx Server.

I wrote an Service to transfer my Data to my Info Table:

ServiceCode:

var koorDaten = new Object();
koorDaten.Koordinaten = objektkoor;
koorDaten.Betreff = objektbetreff;
var tablereference = me.Koor;
tablereference.AddRow(koorDaten);

Code in Unity

 string myPostData = "{\"objektKoor\":\"" + 444545 + "\", \"objektBetreff\":\"" + 1333 + "\"}";

 byte[] pData = Encoding.ASCII.GetBytes(myPostData.ToCharArray());
 Debug.Log(pData);
 string auswertung = Encoding.ASCII.GetString(pData);
 Debug.Log(auswertung);
 Debug.Log(System.BitConverter.ToString(pData).Replace("-", string.Empty).ToLower());

 Dictionary<string, string> dictionary = new Dictionary<string, string>();
 dictionary.Add("cache-control", "no-cache");
 dictionary.Add("appkey", "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx");
 dictionary.Add("content-type", "application/json");
 dictionary.Add("accept", "application/json");

 WWW call = new WWW("http:/xxxxxxxxxxxxxxxxxxxxxxxxxxx.de/Thingworx/Things/Koordinaten/Services/UnityDaten", pData, dictionary);

Now I have only one small Problem, my rows are all blanc, the rows are created but no values are in them

Screenshot:

I cant seem to the Problem, I am stuck, looking into my Code, but cant find the Problem.

I hope someone could help me out, thank you very much