diff --git a/Manager/module.php b/Manager/module.php
index 4a1f8ac..49381d7 100644
--- a/Manager/module.php
+++ b/Manager/module.php
@@ -202,13 +202,13 @@ class Manager extends IPSModule
             $Is_Peak_Shaving = true;
 
             }
-            elseif( $this->("Is_Peak_Shaving")==false){
+            elseif( $this->GetValue("Is_Peak_Shaving")==false){
 
             $remainingPower = -1 * (-1 * $Ueberschussleistung + $Netzbezug);
             $Is_Peak_Shaving = false;
 
             }
-            elseif( $this->("Is_Peak_Shaving")==true){
+            elseif( $this->GetValue("Is_Peak_Shaving")==true){
 
             $remainingPower = $Peakleistung - $Netzbezug;
             $Is_Peak_Shaving = true;