public string DoRegistration(string jsonReg)
{
string error = "";
var inReg = SerializationHelper.DeserializeFromJsonString <Registration>(jsonReg);
var context = new KoloAndroidEntities4Serialization();
var outReg = RegistrationHelper.DoRegistration(inReg, context, out error);
KoloWsObject <Registration> koloWs = new KoloWsObject <Registration>(error, outReg);
context.Dispose();
var result = SerializationHelper.SerializeToJson(koloWs);
return(result);
}