diff --git a/apps/showcase/doc/cascadeselect/FormDoc.vue b/apps/showcase/doc/cascadeselect/FormDoc.vue
index c927e0a07..d5905eec4 100644
--- a/apps/showcase/doc/cascadeselect/FormDoc.vue
+++ b/apps/showcase/doc/cascadeselect/FormDoc.vue
@@ -22,7 +22,7 @@ export default {
     data() {
         return {
             initialValues: {
-                city: { cname: '' }
+                city: null
             },
             resolver: zodResolver(
                 z.object({