diff --git a/routes/web.php b/routes/web.php
index dd415aff..7d09c091 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -6133,8 +6133,8 @@ Route::get('/aggiornapreorder/{idarticolo}/{aggiornapreordine}', function ($idar
                     showarray($data);
 
                     $data['meta_data'] = $product['meta_data'];
-                    updateValueByKey($data['meta_data'], $campoPreOrder, 'true');
-                    updateValueByKey($data['meta_data'], '_is_pre_order', 'true');
+                    updateValueByKey($data['meta_data'], $campoPreOrder, 'yes');
+                    updateValueByKey($data['meta_data'], '_is_pre_order', 'yes');
                     updateValueByKey($data['meta_data'], '_pre_order_date', $datenow);
                     updateValueByKey($data['meta_data'], '_wpro_date_label_variable', '');
                     updateValueByKey($data['meta_data'], '_wpro_no_date_label_variable', '');