diff --git a/examples/mqtt.py b/examples/mqtt.py
index acf4653..fc32a62 100644
--- a/examples/mqtt.py
+++ b/examples/mqtt.py
@@ -100,7 +100,11 @@ def on_message(client, userdata, msg):
     global value_houseBatterySoC
     global value_houseBatteryLoadUnload
     value_pvProduction = ""
-    
+    value_wHouseConsumption = ""
+    value_energyImportExport = ""
+    value_houseBatterySoC = ""
+    value_houseBatteryLoadUnload = ""
+
     if msg.topic == "openWB/pv/W":
         value_pvProduction = ""+msg.payload.decode()
         line = 0