diff --git a/yiiguxing.translation.xml b/yiiguxing.translation.xml
index bb47d40..1cb3981 100644
--- a/yiiguxing.translation.xml
+++ b/yiiguxing.translation.xml
@@ -6,6 +6,8 @@
     <option name="newTranslationDialogY" value="447" />
     <option name="pinTranslationDialog" value="true" />
     <histories>
+      <item value="Makes this Rx looks like a function so you can update a new value using `rx(someOtherValue)`. Practical to assign the Rx directly to some Widget that has a signature ::onChange( value ) Example: ``` final myText = 'GetX rocks!'.obs; in your Constructor, just to check it works :P ever( myText, print ) ; in your build(BuildContext) { TextField( onChanged: myText, )," />
+      <item value="updates the value to `null` and adds it to the Stream. Even with null-safety coming, is still an important feature to support, as `call()` doesn't accept `null` values. For instance, `InputDecoration.errorText` has to be null to not show the &quot;error state&quot;. Sample: ``` final inputError = ''.obs..nil(); print('{inputError.runtimeType}: inputError'); outputs &gt; RxString: null ``` void nil() { subject.add(_value = null); }" />
       <item value="Cause the record did not support by hive cache, remove this value by now Comment reply to record, null by default, soulsRecord or usersRecord. if reply to type is soul, this value is soul record if reply to type is user, this value is user record dynamic replyToRecord;" />
       <item value="折叠" />
       <item value="update last unsenddeleted message preview for on chat list page." />
@@ -54,13 +56,11 @@
       <item value="change new onboarding conditions" />
       <item value="判断条件" />
       <item value="listen details after join group chat." />
-      <item value="_k Default Size" />
-      <item value="_k Default Size Bytes" />
     </histories>
     <option name="languageScores">
       <map>
-        <entry key="CHINESE" value="349" />
-        <entry key="ENGLISH" value="350" />
+        <entry key="CHINESE" value="351" />
+        <entry key="ENGLISH" value="352" />
         <entry key="GERMAN" value="1" />
         <entry key="FRENCH" value="1" />
       </map>