protected StatusObj GetStatus ()
{
var data = new NameValueCollection ();
data.Add ("sessionid", Uri.UnescapeDataString (sessionId));
data.Add ("logpos", "" + logpos);
data.Add ("version", "" + version);
string response = Fetch (baseTradeURL + "tradestatus", "POST", data);
return JsonConvert.DeserializeObject<StatusObj> (response);
}