[Fixed] empty var

metadata.php

@@ -54,8 +54,8 @@ $aModule = [
     ],
     'settings'    => [
         [
-            'group'     => $sModuleId.'_main',
-            'name'      => $sModuleId.'_showManufacturertextOnDetailsPage',
+            'group'     => Constants::OXID_MODULE_ID.'_main',
+            'name'      => Constants::OXID_MODULE_ID.'_showManufacturertextOnDetailsPage',
             'type'      => 'bool',
             'value'     => true,
         ],