diff --git a/Symcon_Publish_to_Shelly_MQTT/module.php b/Symcon_Publish_to_Shelly_MQTT/module.php
index ff3bc27..7ba525a 100644
--- a/Symcon_Publish_to_Shelly_MQTT/module.php
+++ b/Symcon_Publish_to_Shelly_MQTT/module.php
@@ -40,6 +40,7 @@ class Symcon_Publish_to_Shelly_MQTT extends IPSModule
 
     private function GetAction()
     {
+        IPS_LogMessage("ShellySwitchSender", "🚀 Starte GetAction()...");
         // Eigenschaften lesen
         $broker = GetValue($this->ReadPropertyString("broker_address"));
         $port = GetValue($this->ReadPropertyInteger("broker_port"));
@@ -51,6 +52,10 @@ class Symcon_Publish_to_Shelly_MQTT extends IPSModule
         $src = GetValue($this->ReadPropertyString("src"));
         $method = GetValue($this->ReadPropertyString("method"));
         $switch_bool = GetValueBoolean($this->ReadPropertyInteger("switch_bool"));
+
+        IPS_LogMessage("ShellySwitchSender", "📋 Broker: $broker:$port, Topic: $topic");
+        IPS_LogMessage("ShellySwitchSender", "📋 src: $src, method: $method, msg_id: $msg_id");
+        IPS_LogMessage("ShellySwitchSender", "📋 boolVarID: $switch_bool");
         // JSON-Payload erstellen
         $payload = [
             "id" => 0,
@@ -64,20 +69,23 @@ class Symcon_Publish_to_Shelly_MQTT extends IPSModule
 
         $json = json_encode($payload);
 
-        // Sende an MQTTClient (Symcon MQTTClient muss existieren!)
-        $clientID = @IPS_GetInstanceIDByName("MQTTClient", 0); // Name anpassen, falls nötig
-        if ($clientID && IPS_InstanceExists($clientID)) {
-            // Prüfe ob kompatibler MQTTClient
-            if (IPS_GetInstance($clientID)['ModuleInfo']['ModuleID'] == "{C03937E3-5F86-EACA-B4A2-39A24ACF945A}") {
-                // Senden mit interner Funktion
-                MQTTClient_Publish($clientID, $topic, $json, 0, false);
-                IPS_LogMessage("ShellySwitchSender", "📤 Gesendet an '$topic': $json");
-                return;
-            }
-        }
+        IPS_LogMessage("ShellySwitchSender", "📦 MQTT Payload: $json");
 
-        // Fallback: Logging für manuelle MQTT-Sendung
-        IPS_LogMessage("ShellySwitchSender", "⚠️ Kein gültiger MQTTClient gefunden. Bitte in der Instanz 'MQTTClient' benennen.");
+        // Sende an MQTTClient
+        $clientID = @IPS_GetInstanceIDByName("MQTTClient", 0);
+        if ($clientID && IPS_InstanceExists($clientID)) {
+            $moduleID = IPS_GetInstance($clientID)['ModuleInfo']['ModuleID'];
+            IPS_LogMessage("ShellySwitchSender", "📡 Gefundener MQTTClient mit ModuleID: $moduleID");
+
+            if ($moduleID == "{C03937E3-5F86-EACA-B4A2-39A24ACF945A}") {
+                MQTTClient_Publish($clientID, $topic, $json, 0, false);
+                IPS_LogMessage("ShellySwitchSender", "✅ Nachricht erfolgreich an '$topic' gesendet.");
+            } else {
+                IPS_LogMessage("ShellySwitchSender", "❌ Fehler: Instanz 'MQTTClient' hat falsches Modul.");
+            }
+        } else {
+            IPS_LogMessage("ShellySwitchSender", "❌ Kein MQTTClient gefunden oder benannt als 'MQTTClient'.");
+        }
     }
 }