update invoice

lib/pages/rates/custom_list.dart

@@ -15,17 +15,22 @@ import 'custom_row.dart';
 import 'model/shipment_rate_model.dart';
 
 class CustomList extends StatefulWidget {
-  const CustomList({Key key}) : super(key: key);
+  final bool selected;
+  const CustomList({Key key, this.selected}) : super(key: key);
   @override
   _CustomListState createState() => _CustomListState();
 }
 
 class _CustomListState extends State<CustomList> {
   bool _isLoading = false;
+  bool _selected = false;
 
   @override
   void initState() {
     super.initState();
+    if (widget.selected != null) {
+      _selected = widget.selected;
+    }
   }
 
   @override
@@ -75,8 +80,11 @@ class _CustomListState extends State<CustomList> {
                       shipmentRateModel.rate.customDuties[index];
                   return InkWell(
                     onTap: () {
-                      Navigator.of(context).push(CupertinoPageRoute(
-                          builder: (context) => CustomEditor(custom: custom)));
+                      _selected
+                          ? Navigator.pop(context, custom)
+                          : Navigator.of(context).push(CupertinoPageRoute(
+                              builder: (context) =>
+                                  CustomEditor(custom: custom)));
                     },
                     child: Container(
                       child: _row(