no message

VGT_Sub/module.json

@@ -3,7 +3,7 @@
   "name": "VGT_Sub",
   "type": 3,
   "vendor": "Belevo",
-  "aliases": ["VGT MQTT Client"],
+  "aliases": ["VGT MQTT Device"],
   "prefix": "VGT",
   "parentRequirements": [],
   "childRequirements": [],

VGT_Sub/module.php

@@ -8,13 +8,17 @@ class VGT_Sub extends IPSModule
     {
         parent::Create();
 
+        // DeviceID
         $this->RegisterPropertyString('DeviceID', '');
 
+        // Eingehende MQTT-Nachrichten
         $this->RegisterVariableString("InputJSON", "MQTT Input", "", 1);
         $this->EnableAction("InputJSON");
 
+        // Ausgehende MQTT-Nachrichten
         $this->RegisterVariableString("OutputJSON", "MQTT Output", "", 2);
 
+        // Statusvariablen
         $this->RegisterVariableFloat('PowerProduction', 'Power Production', '', 10);
         $this->EnableAction('PowerProduction');
 
@@ -33,6 +37,7 @@ class VGT_Sub extends IPSModule
         $this->RegisterVariableFloat('MaxSoc', 'Max SoC', '', 15);
         $this->EnableAction('MaxSoc');
 
+        // Remote-Control
         $this->RegisterVariableInteger('PowerSetpoint', 'Power Setpoint', '', 20);
         IPS_SetVariableCustomAction($this->GetIDForIdent('PowerSetpoint'), 0);
 
@@ -43,6 +48,7 @@ class VGT_Sub extends IPSModule
     public function RequestAction($Ident, $Value)
     {
         if ($Ident === "InputJSON") {
+            SetValueString($this->GetIDForIdent("InputJSON"), $Value);
             $this->ProcessIncoming($Value);
             return;
         }
@@ -53,7 +59,11 @@ class VGT_Sub extends IPSModule
     private function ProcessIncoming($jsonString)
     {
         $data = @json_decode($jsonString, true);
-        if (!is_array($data) || !isset($data['topic']) || !isset($data['payload'])) {
+        if (!is_array($data)) {
+            return;
+        }
+
+        if (!isset($data['topic']) || !isset($data['payload'])) {
             return;
         }
 
@@ -62,12 +72,16 @@ class VGT_Sub extends IPSModule
 
         $device = $this->ReadPropertyString('DeviceID');
 
+        // Feedback Request
         if ($topic === "feedback-request/$device") {
             $this->SendFeedback($device);
+            return;
         }
 
+        // Remote Control Request
         if ($topic === "remote-control-request/$device") {
-            $this->ProcessRemote($device, $payload);
+            $this->ProcessRemoteControl($device, $payload);
+            return;
         }
     }
 
@@ -91,7 +105,7 @@ class VGT_Sub extends IPSModule
         );
     }
 
-    private function ProcessRemote($device, $payload)
+    private function ProcessRemoteControl($device, $payload)
     {
         $json = @json_decode($payload, true);
         if (!is_array($json)) {