diff --git a/PV_Visu/module.html b/PV_Visu/module.html
index 4d2975c..acec1e3 100644
--- a/PV_Visu/module.html
+++ b/PV_Visu/module.html
@@ -37,6 +37,7 @@
     </div>
     <script>
         function Apply(data) {
+            console.log("Neue Daten:", data);
             document.getElementById('barCons').style.width  = data.prodCons + '%';
             document.getElementById('barFeed').style.width  = data.prodFeed + '%';
             document.getElementById('barPV').style.width    = data.consPV + '%';
@@ -64,15 +65,18 @@
 
         if (typeof registerMessageHandler === 'function') {
             registerMessageHandler(handleMessage);
+        } else {
+            console.warn("registerMessageHandler nicht verfügbar");
         }
 
-        // Live-Aktualisierung alle 30 Sekunden
+        // Polling: hole alle 30 Sekunden frische Daten
         function pollData() {
             if (typeof IPS !== 'undefined') {
+                console.log("Poll: RequestAction(update)");
                 IPS.RequestAction('update', '');
             }
         }
         setInterval(pollData, 30000);
     </script>
 </body>
-</html>
+</html>
\ No newline at end of file
diff --git a/PV_Visu/module.php b/PV_Visu/module.php
index 0c181f4..7e94152 100644
--- a/PV_Visu/module.php
+++ b/PV_Visu/module.php
@@ -34,6 +34,7 @@ class PV_Visu extends IPSModule
     public function MessageSink($TimeStamp, $SenderID, $Message, $Data)
     {
         if ($Message === VM_UPDATE) {
+            IPS_LogMessage("PV_Visu", "MessageSink triggered by $SenderID");
             $this->UpdateData();
         }
     }
@@ -48,7 +49,7 @@ class PV_Visu extends IPSModule
     public function RequestAction($Ident, $Value)
     {
         if ($Ident === 'update') {
-            return $this->UpdateData(); // Rückgabe für Visualisierung
+            return $this->UpdateData();
         }
         throw new \Exception("Unknown Ident: $Ident");
     }
@@ -82,7 +83,11 @@ class PV_Visu extends IPSModule
         ];
 
         $json = json_encode($data);
+        IPS_LogMessage("PV_Visu", "UpdateData: $json");
+
         SetValueString($this->GetIDForIdent('JSONData'), $json);
+        $this->UpdateVisualizationValue($json);
+
         return $data;
     }
 
@@ -96,4 +101,12 @@ class PV_Visu extends IPSModule
         $values = @AC_GetAggregatedValues($archiveID, $varID, 1, $start, $end, 1);
         return isset($values[0]['Avg']) ? (float)$values[0]['Avg'] : 0.0;
     }
-}
+
+    private function UpdateVisualizationValue(string $json)
+    {
+        if (method_exists($this, 'SendDataToVisualization')) {
+            $this->SendDataToVisualization($json); // nur in IPS >= 7.0
+            IPS_LogMessage("PV_Visu", "SendDataToVisualization triggered");
+        }
+    }
+}
\ No newline at end of file