try to use AdminServicesTabFieldsSave

zimbraSingle.php

@@ -792,14 +792,18 @@ function zimbraSingle_ServiceSingleSignOn($params) {
 }
 
 function zimbraSingle_AdminServicesTabFieldsSave($params) {
-    $params['configoptions']['addonQuota'] = $params['configoptions']['addonQuota']  + $params['configoptions']['newAddQuota'] ;
-    $params['configoptions']['newAddQuota'] = 0;
+    $addonQuota = $params['configoptions']['addonQuota']  + $params['configoptions']['newAddQuota'] ;
+    $newAddQuota = 0;
+    $options = Capsule::table('tblhostingconfigoptions')
+            ->leftJoin('tblproductconfigoptions', 'tblhostingconfigoptions.configid', '=', 'tblproductconfigoptions.id')
+            ->where('relid', '=', $serviceid)
+            ->get();
     logModuleCall(
         'zimbrasingle',
         __FUNCTION__,
         $params,
         'Debug',
-        $whmcs
+        $options
     );
     return 'success';
 }