diff --git a/octoprint_bambu_printer/printer/bambu_virtual_printer.py b/octoprint_bambu_printer/printer/bambu_virtual_printer.py
index 9918824..12a5d47 100644
--- a/octoprint_bambu_printer/printer/bambu_virtual_printer.py
+++ b/octoprint_bambu_printer/printer/bambu_virtual_printer.py
@@ -111,6 +111,7 @@ class BambuVirtualPrinter:
         self._mqtt_client = None
         self._mqtt_connected = False
         self._bambu_client = None
+        self._custom_connected = False
 
         self._bambu_client: BambuClient = self._create_client_connection_async()
 
@@ -172,6 +173,11 @@ class BambuVirtualPrinter:
     def project_files(self):
         return self._project_files_view
 
+    @property
+    def is_connected(self):
+        """Custom property to track connection status without modifying BambuClient directly"""
+        return self._custom_connected and self._mqtt_connected
+
     def change_state(self, new_state: APrinterState):
         self._state_change_queue.put(new_state)
 
@@ -231,6 +237,7 @@ class BambuVirtualPrinter:
         self._log.debug(f"MQTT connected with result code: {rc}")
         if rc == 0:
             self._mqtt_connected = True
+            self._custom_connected = True
 
             # Subscribe to the relevant topics for the Bambu printer
             device_topic = f"device/{self._settings.get(['serial'])}/report"
@@ -242,10 +249,12 @@ class BambuVirtualPrinter:
             self.sendOk()
         else:
             self._mqtt_connected = False
+            self._custom_connected = False
             self._log.error(f"Failed to connect to MQTT broker with result code: {rc}")
 
     def _on_mqtt_disconnect(self, client, userdata, rc):
         self._mqtt_connected = False
+        self._custom_connected = False
         self._log.debug(f"MQTT disconnected with result code: {rc}")
 
     def _on_mqtt_message(self, client, userdata, msg):
@@ -335,14 +344,16 @@ class BambuVirtualPrinter:
             self._log.error(f"Failed to connect to MQTT broker: {e}")
             raise
 
-        # Inject our MQTT client into the BambuClient
+        # Inject our MQTT client into the BambuClient without modifying 'connected'
         bambu_client._mqtt_client = self._mqtt_client
-        bambu_client.connected = True
+        
+        # Instead of modifying bambu_client.connected, we'll use our custom property
+        self._custom_connected = True
 
         # Store the Bambu client
         self._bambu_client = bambu_client
 
-        self._log.info(f"Bambu connection status: {bambu_client.connected}")
+        self._log.info(f"Custom connection status: {self.is_connected}")
         self.sendOk()
 
     def publish_mqtt(self, topic, payload):
@@ -354,7 +365,7 @@ class BambuVirtualPrinter:
     # Override BambuClient's publish method to use our MQTT client
     def publish(self, command):
         """Publish a command using our MQTT client"""
-        if not self._mqtt_connected:
+        if not self.is_connected:
             self._log.error("Cannot publish command: MQTT not connected")
             return False
 
@@ -634,10 +645,10 @@ class BambuVirtualPrinter:
             return
 
         # post gcode to printer otherwise
-        if self.bambu_client.connected:
+        if self.is_connected:
             GCODE_COMMAND = commands.SEND_GCODE_TEMPLATE
             GCODE_COMMAND["print"]["param"] = full_command + "\n"
-            if self.bambu_client.publish(GCODE_COMMAND):
+            if self.publish(GCODE_COMMAND):
                 self._log.info("command sent successfully")
                 self.sendOk()
 
@@ -727,7 +738,7 @@ class BambuVirtualPrinter:
 
     def _processTemperatureQuery(self) -> bool:
         # includeOk = not self._okBeforeCommandOutput
-        if self.bambu_client.connected:
+        if self.is_connected:
             output = self._create_temperature_message()
             self.sendIO(output)
             return True
@@ -738,8 +749,11 @@ class BambuVirtualPrinter:
         if self._mqtt_client and self._mqtt_connected:
             self._mqtt_client.loop_stop()
             self._mqtt_client.disconnect()
-        if self.bambu_client.connected:
-            self.bambu_client.disconnect()
+            self._mqtt_connected = False
+            self._custom_connected = False
+        # Ändern Sie jeden Verweis auf bambu_client.connected zu self.is_connected
+        if self._bambu_client:
+            self._bambu_client.disconnect()
         self.change_state(self._state_idle)
         self._serial_io.close()
         self.stop()