diff --git a/Boiler_2_Stufig_Mit_Fueler/module.php b/Boiler_2_Stufig_Mit_Fueler/module.php
index 1222c1d..463d9fb 100644
--- a/Boiler_2_Stufig_Mit_Fueler/module.php
+++ b/Boiler_2_Stufig_Mit_Fueler/module.php
@@ -114,7 +114,7 @@ class Boiler_2_Stufig_Mit_Fueler extends IPSModule
         if ($boilertemperatur_glätten) {
             $boilerFuehlerPT1ID = $this->ReadPropertyInteger("Boilerfuehler_PT1");
 
-            $boilerPT1 = GetValue($boilerFuehlerPT1ID);
+            $boilerPT1 = $this->GetValue($boilerFuehlerPT1ID);
             $boilerTemp = $this->GetValue("Boilertemperatur");
             $time_constant= $this->ReadPropertyInteger("ZeitKonstante");
             $delta_t = 30; 
@@ -125,7 +125,7 @@ class Boiler_2_Stufig_Mit_Fueler extends IPSModule
 
         } else {
             $boilerFuehlerPT1ID = $this->ReadPropertyInteger("Boilerfuehler_PT1");
-            $boilerPT1 = GetValue($boilerFuehlerPT1ID);
+            $boilerPT1 = $this->GetValue($boilerFuehlerPT1ID);
             IPS_LogMessage("Boiler", "Keine Glättung, Boilertemperatur:$boilerPT1");
             $this->SetValue("Boilertemperatur", $boilerPT1);
         }
diff --git a/library.json b/library.json
index 706aa09..4fc0843 100644
--- a/library.json
+++ b/library.json
@@ -6,7 +6,7 @@
     "compatibility": {
         "version": "7.1"
     },
-    "version": "0.272",
+    "version": "0.273",
 
     "build": 0,
     "date": 0