diff --git a/lib/src/form/src/form_group_wrapper.dart b/lib/src/form/src/form_group_wrapper.dart
index 9648374..d572cff 100644
--- a/lib/src/form/src/form_group_wrapper.dart
+++ b/lib/src/form/src/form_group_wrapper.dart
@@ -118,6 +118,7 @@ class _FormGroupWrapperState extends State<FormGroupWrapper> {
         String id = '';
         setState(() {
           id = widget.formController.addInstanceToFormGroup(widget.groupID);
+          instances = widget.formController.getFormGroupValue(widget.groupID)!.instances;
         });
         return id;
       },