anchor.diff:            value := aPayload.bb_read_double(aCursor);
             if fLinkLayers.TryGetValue(fieldInfo, layer) then
               layer.AddValue(timestamp, value);
  +          if fTrackLayers.TryGetValue(fieldInfo, trackLayer) then
  +            trackLayer.AddValue(sensorid, value);
           end;
         sensordata_linkid:
           begin
  
positive.code:   fQueryCounter := 0;
    fQuerySubscribed := False;
    fQueryEventHandler := handleQueryEvent;
    fLinkLayers := TDictionary<Integer, TSesmiLinkLayer>.Create;
    fTrackLayers := TDictionary<Integer, TSesmiTrackLayer>.Create;
    inherited;
  
negative.code:   fProjects := TDictionary<string, TProject>.Create;
    fMaxNearestObjectDistanceInMeters := aMaxNearestObjectDistanceInMeters;
    dateFormData := '[{ "formElement": "checkbox", "type": "string", "required": "y", "optionsArray": ["Ma", "Di", "Wo", "Do", "Vr", "Za", "Zo"], "labelText": "Dagen van de week", "idName": "daysSelect", "extraOptions": false },'+
              '{"formElement":"slider", "type":"int", "required":"y", "optionsArray":["0", "24"], "labelText":"Vanaf (tijd):", "idName":"fromHour", "extraOptions":[1, "uur"]},'+
              '{"formElement": "slider", "type": "int", "required": "y", "optionsArray": ["0", "24"], "labelText": "Tot (tijd):", "idName": "toHour", "extraOptions": [1, "uur"]},'+
              '{"formElement": "input", "type": "string", "required": "y", "optionsArray": false, "labelText": "Van datum [dd-mm-jjjj]", "idName": "fromDate", "extraOptions": {"defaultValue": "13-10-2017"} },'+
              '{"formElement": "input", "type": "string", "required": "y", "optionsArray": false, "labelText": "Tot en met datum [dd-mm-jjjj]", "idName": "toDate", "extraOptions": {"defaultValue": "20-10-2017"}}'+
              ']';
    //InitPG;
    project := TSesmiProject.Create(aSessionModel, aConnection, 'Sesmi', aProjectName, aTilerFQDN, aTilerStatusURL,
  