diff --git a/Flutter/json_to_dart/CHANGELOG.md b/Flutter/json_to_dart/CHANGELOG.md
index 09e76e3..d459d1b 100644
--- a/Flutter/json_to_dart/CHANGELOG.md
+++ b/Flutter/json_to_dart/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 1.2.0
+
+* Add smart nullable to support when data is null, set it to nullable automatically
+* Support List format json
+  
 ## 1.1.0
 
 * Add clone method
diff --git a/Flutter/json_to_dart/lib/models/config.dart b/Flutter/json_to_dart/lib/models/config.dart
index 8a39410..91011b8 100644
--- a/Flutter/json_to_dart/lib/models/config.dart
+++ b/Flutter/json_to_dart/lib/models/config.dart
@@ -85,6 +85,13 @@ class ConfigSetting extends Setting<ConfigSetting> with ChangeNotifier {
   Locale get locale => _locale;
   @HiveField(12)
   set locale(Locale value) {
+    // fix hive error
+    // we change zh_Hans to zh
+    if (value.languageCode == 'zh' && value.scriptCode == 'Hans') {
+      value = const Locale.fromSubtags(
+        languageCode: 'zh',
+      );
+    }
     if (_locale != value) {
       _locale = value;
       notifyListeners();
diff --git a/Flutter/json_to_dart/lib/pages/json_tree_item.dart b/Flutter/json_to_dart/lib/pages/json_tree_item.dart
index 5e38021..9970f33 100644
--- a/Flutter/json_to_dart/lib/pages/json_tree_item.dart
+++ b/Flutter/json_to_dart/lib/pages/json_tree_item.dart
@@ -198,6 +198,9 @@ class _JsonTreeItemState extends State<JsonTreeItem> {
     rowItems.add(Selector<ConfigSetting, Tuple2<bool, bool>>(
       builder: (BuildContext c, Tuple2<bool, bool> value, Widget? child) {
         if (ConfigSetting().nullsafety) {
+          if (!ConfigSetting().smartNullable) {
+            property.nullable = value.item2;
+          }
           return Expanded(
             flex: 1,
             child: finalDepth > 0 && !widget.isArrayOject
diff --git a/Flutter/json_to_dart/pubspec.lock b/Flutter/json_to_dart/pubspec.lock
index b9edd54..edd4f23 100644
--- a/Flutter/json_to_dart/pubspec.lock
+++ b/Flutter/json_to_dart/pubspec.lock
@@ -7,14 +7,14 @@ packages:
       name: _fe_analyzer_shared
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "19.0.0"
+    version: "20.0.0"
   analyzer:
     dependency: transitive
     description:
       name: analyzer
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.3.0"
+    version: "1.4.0"
   args:
     dependency: transitive
     description:
@@ -154,7 +154,7 @@ packages:
       name: crypto
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "3.0.0"
+    version: "3.0.1"
   dart_style:
     dependency: "direct main"
     description:
@@ -232,7 +232,7 @@ packages:
       name: hive
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.0.1"
+    version: "2.0.3"
   hive_flutter:
     dependency: "direct main"
     description:
@@ -253,7 +253,7 @@ packages:
       name: http_multi_server
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "3.0.0"
+    version: "3.0.1"
   http_parser:
     dependency: transitive
     description:
@@ -442,7 +442,7 @@ packages:
       name: quiver
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "3.0.0"
+    version: "3.0.1"
   shelf:
     dependency: transitive
     description:
diff --git a/Flutter/json_to_dart/pubspec.yaml b/Flutter/json_to_dart/pubspec.yaml
index 1d60bf7..d57dec6 100644
--- a/Flutter/json_to_dart/pubspec.yaml
+++ b/Flutter/json_to_dart/pubspec.yaml
@@ -11,7 +11,7 @@ description: The tool to convert json to dart code.
 # In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
 # Read more about iOS versioning at
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
-version: 1.1.0
+version: 1.2.0
 
 environment:
   sdk: '>=2.12.0 <3.0.0'