fixed position

beike/Admin/Services/ProductService.php

@@ -27,6 +27,7 @@ class ProductService
             DB::beginTransaction();
 
             $data['brand_id']  = (int) $data['brand_id'];
+            $data['position']  = (int) $data['position'];
             $data['weight']    = (float) $data['weight'];
             $data['variables'] = json_decode($data['variables']);
             $product->fill($data);