diff --git a/CounterServer/form.json b/CounterServer/form.json
index b31e39f..30dace5 100644
--- a/CounterServer/form.json
+++ b/CounterServer/form.json
@@ -13,6 +13,12 @@
             "validVariableTypes": [3]
         },
         {
+            "type": "NumberSpinner",
+            "name": "ClientIdPortal",
+            "caption": "Client-ID (Portal)",
+            "digits": 0
+        },
+    {
             "type": "NumberSpinner",
             "name": "UpdateTime",
             "caption": "Aktualisierungszeit (Sekunden)",
diff --git a/CounterServer/module.php b/CounterServer/module.php
index a27a0d0..0e3bb57 100644
--- a/CounterServer/module.php
+++ b/CounterServer/module.php
@@ -9,7 +9,7 @@ class CounterServer extends IPSModule
         $this->RegisterPropertyInteger('Connector', 0);
         $this->RegisterPropertyInteger('SourceJSON', 0);
         $this->RegisterPropertyInteger('UpdateTime', 60);
-
+        $this->RegisterPropertyInteger('ClientIdPortal', 0);
         $this->RegisterTimer('Update', 0, 'SECT_checkTable($_IPS[\'TARGET\']);');
     }
 
@@ -61,7 +61,7 @@ class CounterServer extends IPSModule
             $counterName = $c['name'] ?? $counterId;
             $type = $c['type'] ?? 'other';
             $unit = $c['unit'] ?? 'kWh';
-            $projectId = isset($c['project_id']) ? (int)$c['project_id'] : 'NULL';
+            $projectId = $this->ReadPropertyInteger('ClientIdPortal');
 
             // ---------- UPSERT ----------
             $sql = "