diff --git a/Ladestation_v2/module.php b/Ladestation_v2/module.php
index 32a894b..24db2f4 100644
--- a/Ladestation_v2/module.php
+++ b/Ladestation_v2/module.php
@@ -431,7 +431,7 @@ class Ladestation_v2 extends IPSModule
                         CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
                         CURLOPT_CUSTOMREQUEST => "GET",
                         CURLOPT_HTTPHEADER => [
-                          "Authorization: Bearer ".$this->GetValue("Token_Intern")."",
+                          "Authorization: Bearer ".$this->GetBuffer("Token_Intern")."",
                           "content-type: application/*+json"
                         ],
                       ]);
@@ -712,7 +712,7 @@ class Ladestation_v2 extends IPSModule
                         CURLOPT_CUSTOMREQUEST => "POST",
                         CURLOPT_POSTFIELDS => "{\"amps\":". $value .",\"minutes\":0}",
                         CURLOPT_HTTPHEADER => [
-                          "Authorization: Bearer ".$this->GetValue("Token_Intern")."",
+                          "Authorization: Bearer ".$this->GetBuffer("Token_Intern")."",
                           "content-type: application/*+json"
                         ],
                       ]);
@@ -775,7 +775,7 @@ class Ladestation_v2 extends IPSModule
                         CURLOPT_CUSTOMREQUEST => "POST",
                         CURLOPT_POSTFIELDS => "{\"amps\":". $value .",\"minutes\":0}",
                         CURLOPT_HTTPHEADER => [
-                          "Authorization: Bearer ".$this->GetValue("Token_Intern")."",
+                          "Authorization: Bearer ".$this->GetBuffer("Token_Intern")."",
                           "content-type: application/*+json"
                         ],
                       ]);
@@ -841,7 +841,7 @@ class Ladestation_v2 extends IPSModule
 
         // cURL-Handle schließen
         curl_close($ch);
-        $this->SetValue("Token_Intern", json_decode($response['accessToken']));
+        $this->SetBuffer("Token_Intern", json_decode($response)['accessToken']);
 
     }