diff --git a/CHANGELOG.md b/CHANGELOG.md
index 758231c..9a2b395 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Change log
 
+## 1.0.0-rc.1
+* fix error of get value
+
 ## 1.0.0-rc.0
 * support null safety
 
diff --git a/ios/Classes/AgoraRtmPlugin.m b/ios/Classes/AgoraRtmPlugin.m
index 34e6819..9c72ed3 100644
--- a/ios/Classes/AgoraRtmPlugin.m
+++ b/ios/Classes/AgoraRtmPlugin.m
@@ -438,7 +438,7 @@ -(NSString *)getString:(id)obj{
 }
 -(BOOL)getBool:(id)obj{
     if ([obj isEqual:[NSNull null]]) {
-        return nil;
+        return NO;
     }
     return obj;
 }
diff --git a/pubspec.yaml b/pubspec.yaml
index 89543d6..7752c75 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: agora_rtm
 description: Flutter plugin for Agora RTM SDK.
-version: 1.0.0-rc.0
+version: 1.0.0-rc.1
 homepage: https://www.agora.io
 repository: https://github.com/AgoraIO/Flutter-RTM