diff --git a/VGT_Sub/module.php b/VGT_Sub/module.php
index 0a3ead1..7002774 100644
--- a/VGT_Sub/module.php
+++ b/VGT_Sub/module.php
@@ -8,10 +8,10 @@ class VGT_Sub extends IPSModule
     {
         parent::Create();
 
-        // Device ID
+        // Device-ID
         $this->RegisterPropertyString("DeviceID", "");
 
-        // Editable response values
+        // 6 editable values (response payload)
         $this->RegisterVariableFloat("PowerProduction", "Power Production", "", 10);
         $this->EnableAction("PowerProduction");
 
@@ -30,16 +30,14 @@ class VGT_Sub extends IPSModule
         $this->RegisterVariableInteger("MaxSOC", "Max SOC", "", 60);
         $this->EnableAction("MaxSOC");
 
-
-        // Remote-Control incoming values (read-only)
+        // Remote-Control incoming (read-only)
         $this->RegisterVariableFloat("RC_PowerSetpoint", "RC Power Setpoint", "", 70);
         $this->RegisterVariableString("RC_Strategy", "RC Strategy", "", 80);
 
-        // Connect to MQTT client splitter
+        // Parent MQTT Splitter
         $this->ConnectParent('{F7A0DD2E-7684-95C0-64C2-D2A9DC47577B}');
     }
 
-
     public function ApplyChanges()
     {
         parent::ApplyChanges();
@@ -48,7 +46,7 @@ class VGT_Sub extends IPSModule
 
         $device = $this->ReadPropertyString("DeviceID");
 
-        // Subscribe to both incoming topics
+        // Subscribes
         $topics = [
             "feedback-request/" . $device,
             "remote-control-request/" . $device
@@ -56,46 +54,53 @@ class VGT_Sub extends IPSModule
 
         foreach ($topics as $t) {
             $this->SendDataToParent(json_encode([
-                "DataID"     => "{F7A0DD2E-7684-95C0-64C2-D2A9DC47577B}",
-                "PacketType" => 8,   // SUBSCRIBE
-                "Topic"      => $t
+                "DataID" => "{043E0F88-B2B0-4DF4-B1A6-64FB1C385D3C}",
+                "PacketType" => 8, // SUBSCRIBE
+                "Topic" => $t
             ]));
         }
     }
 
 
-    // Handle UI actions
+    // ---------------------------------------------------------------------
+    // ACTION HANDLER
+    // ---------------------------------------------------------------------
     public function RequestAction($Ident, $Value)
     {
         SetValue($this->GetIDForIdent($Ident), $Value);
     }
 
-
-    // MQTT RECEIVE
+    // ---------------------------------------------------------------------
+    // RECEIVE FROM MQTT
+    // ---------------------------------------------------------------------
     public function ReceiveData($JSONString)
     {
         $data = json_decode($JSONString);
-
         if (!isset($data->Topic) || !isset($data->Payload)) {
             return;
         }
 
-        $topic = $data->Topic;
+        $topic  = $data->Topic;
         $payload = $data->Payload;
 
-        $device = $this->ReadPropertyString("DeviceID");
+        $deviceID = $this->ReadPropertyString("DeviceID");
 
-        if ($topic === "feedback-request/" . $device) {
+        // Topics
+        $feedbackReq  = "feedback-request/" . $deviceID;
+        $remoteReq    = "remote-control-request/" . $deviceID;
+
+        if ($topic === $feedbackReq) {
             $this->HandleFeedbackRequest();
         }
 
-        if ($topic === "remote-control-request/" . $device) {
+        if ($topic === $remoteReq) {
             $this->HandleRemoteControlRequest($payload);
         }
     }
 
-
-    // FEEDBACK REQUEST → reply with state JSON
+    // ---------------------------------------------------------------------
+    // HANDLE FEEDBACK REQUEST -> SEND STATE JSON
+    // ---------------------------------------------------------------------
     private function HandleFeedbackRequest()
     {
         $response = [
@@ -108,11 +113,15 @@ class VGT_Sub extends IPSModule
         ];
 
         $topic = "feedback-response/" . $this->ReadPropertyString("DeviceID");
+
         $this->SendToMQTT($topic, json_encode($response));
     }
 
-
-    // REMOTE CONTROL REQUEST → write values + respond
+    // ---------------------------------------------------------------------
+    // HANDLE REMOTE CONTROL REQUEST
+    // payload:
+    // { "power_setpoint": 150, "strategy": "activation" }
+    // ---------------------------------------------------------------------
     private function HandleRemoteControlRequest(string $payload)
     {
         $data = json_decode($payload, true);
@@ -120,6 +129,7 @@ class VGT_Sub extends IPSModule
             return;
         }
 
+        // Write values to variables
         if (isset($data["power_setpoint"])) {
             SetValue($this->GetIDForIdent("RC_PowerSetpoint"), $data["power_setpoint"]);
         }
@@ -128,40 +138,41 @@ class VGT_Sub extends IPSModule
             SetValue($this->GetIDForIdent("RC_Strategy"), $data["strategy"]);
         }
 
-        // Respond with same payload
+        // Respond with same JSON
         $topic = "remote-control-response/" . $this->ReadPropertyString("DeviceID");
         $this->SendToMQTT($topic, json_encode($data));
     }
 
-
-    // MQTT SEND
+    // ---------------------------------------------------------------------
+    // MQTT SEND HELPERS
+    // ---------------------------------------------------------------------
     private function SendToMQTT(string $topic, string $payload)
     {
-        $packet = [
-            "DataID"           => "{043E0F88-B2B0-4DF4-B1A6-64FB1C385D3C}",
-            "PacketType"       => 3,  // PUBLISH
+        $this->SendDataToParent(json_encode([
+            "DataID"  => "{043E0F88-B2B0-4DF4-B1A6-64FB1C385D3C}",
+            "PacketType" => 3,
             "QualityOfService" => 0,
-            "Retain"           => false,
-            "Topic"            => $topic,
-            "Payload"          => $payload
-        ];
-
-        $this->SendDataToParent(json_encode($packet));
+            "Retain" => false,
+            "Topic" => $topic,
+            "Payload" => $payload
+        ]));
     }
 
-
+    // ---------------------------------------------------------------------
     // CONFIG FORM
+    // ---------------------------------------------------------------------
     public function GetConfigurationForm()
     {
         return json_encode([
             "elements" => [
                 [
-                    "type"    => "ValidationTextBox",
-                    "name"    => "DeviceID",
+                    "type" => "ValidationTextBox",
+                    "name" => "DeviceID",
                     "caption" => "Device ID"
                 ]
             ]
         ]);
     }
 }
+
 ?>
\ No newline at end of file