diff --git a/analytics/analytics/analytic_unit_manager.py b/analytics/analytics/analytic_unit_manager.py
index 2111159..46d8494 100644
--- a/analytics/analytics/analytic_unit_manager.py
+++ b/analytics/analytics/analytic_unit_manager.py
@@ -74,7 +74,9 @@ class AnalyticUnitManager:
         worker = self.__ensure_worker(analytic_unit_id, payload['detector'], payload['analyticUnitType'])
         data = prepare_data(payload['data'])
         if task['type'] == 'PUSH':
-            return await worker.recieve_data(data, payload['cache'])
+            # TODO: do it a better way
+            res = await worker.recieve_data(data, payload['cache'])
+            return res.update({ 'analyticUnitId': analytic_unit_id })
         elif task['type'] == 'LEARN':
             if 'segments' in payload:
                 return await worker.do_train(payload['segments'], data, payload['cache'])
diff --git a/analytics/analytics/detectors/threshold_detector.py b/analytics/analytics/detectors/threshold_detector.py
index b2c1716..38c2750 100644
--- a/analytics/analytics/detectors/threshold_detector.py
+++ b/analytics/analytics/detectors/threshold_detector.py
@@ -27,12 +27,15 @@ class ThresholdDetector(Detector):
         value = cache['value']
         condition = cache['condition']
 
-        last_entry = dataframe.iloc[-1]
+        dataframe_without_nans = dataframe.dropna()
+        if len(dataframe_without_nans) == 0:
+            return dict()
+        last_entry = dataframe_without_nans.iloc[-1]
         last_value = last_entry['value']
         # TODO: convert from nanoseconds to millisecond in a better way: not by dividing by 10^6
         last_time = last_entry['timestamp'].value / 1000000
 
-        segment = (last_time, last_time)
+        segment = ({ 'from': last_time, 'to': last_time })
         segments = []
         if condition == '>':
             if last_value > value:
@@ -57,4 +60,4 @@ class ThresholdDetector(Detector):
         }
 
     def recieve_data(self, data: pd.DataFrame, cache: Optional[ModelCache]) -> Optional[dict]:
-        return self.detect(self.bucket.data, cache)
+        return self.detect(data, cache)
diff --git a/server/src/controllers/analytics_controller.ts b/server/src/controllers/analytics_controller.ts
index a8e95e5..a9d4733 100644
--- a/server/src/controllers/analytics_controller.ts
+++ b/server/src/controllers/analytics_controller.ts
@@ -101,7 +101,7 @@ async function query(analyticUnit: AnalyticUnit.AnalyticUnit, detector: Analytic
   } else if(detector === AnalyticUnit.DetectorType.THRESHOLD) {
     const now = Date.now();
     range = {
-      from: now - 5 * SECONDS_IN_MINUTE,
+      from: now - 5 * SECONDS_IN_MINUTE * 1000,
       to: now
     };
   }
diff --git a/server/src/models/threshold_model.ts b/server/src/models/threshold_model.ts
index 611ff15..1374c7f 100644
--- a/server/src/models/threshold_model.ts
+++ b/server/src/models/threshold_model.ts
@@ -59,7 +59,8 @@ export async function findOne(id: AnalyticUnitId): Promise<Threshold | null> {
 }
 
 export async function updateThreshold(id: AnalyticUnitId, value: number, condition: Condition) {
-  if(findOne(id) === null) {
+  const threshold = await db.findOne(id);
+  if(threshold === null) {
     return db.insertOne({ id, value, condition });
   }
   return db.updateOne({ id }, { value, condition });
diff --git a/server/src/routes/threshold_router.ts b/server/src/routes/threshold_router.ts
index aeeec65..1f3107b 100644
--- a/server/src/routes/threshold_router.ts
+++ b/server/src/routes/threshold_router.ts
@@ -9,8 +9,9 @@ import * as _ from 'lodash';
 
 async function getThresholds(ctx: Router.IRouterContext) {
   try {
-    const ids: AnalyticUnitId = ctx.request.query.ids;
-    if(ids === undefined || _.isEmpty(ids)) {
+    const ids: AnalyticUnitId[] = ctx.request.query.ids.split(',');
+
+    if(ids === undefined) {
       throw new Error('analyticUnitIds (ids) are missing');
     }
 
diff --git a/server/src/services/data_puller.ts b/server/src/services/data_puller.ts
index 043c3ec..24fe746 100644
--- a/server/src/services/data_puller.ts
+++ b/server/src/services/data_puller.ts
@@ -94,11 +94,13 @@ export class DataPuller {
       if(cache !== null) {
         cache = cache.data
       }
+      const detector = AnalyticUnit.getDetectorByType(analyticUnit.type);
       let payload = {
         data: payloadValues,
         from: time,
         to: now,
-        pattern: analyticUnit.type,
+        analyticUnitType: analyticUnit.type,
+        detector,
         cache
       };
       this._unitTimes[analyticUnit.id] = now;