diff --git a/README.md b/README.md
index 615070c..94a477c 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ DSBridge-Android:https://github.com/wendux/DSBridge-Android
    //for asynchronous invocation
    - (NSString *) testAsyn:(NSDictionary *) args :(void (^)(NSString * _Nullable result,BOOL isComplete))handler
    {
-       handler([(NSString *)[args valueForKey:@"msg"] stringByAppendingString:@"[ asyn call]"],true);
+       handler([(NSString *)[args valueForKey:@"msg"] stringByAppendingString:@"[ asyn call]"],YES);
    }
    @end
    ```
diff --git a/dsbridgedemo/JsApiTest.m b/dsbridgedemo/JsApiTest.m
index 2a91c6d..1948219 100644
--- a/dsbridgedemo/JsApiTest.m
+++ b/dsbridgedemo/JsApiTest.m
@@ -24,7 +24,7 @@ - (NSString *) testSyn:(NSDictionary *) args
 
 - (void) testAsyn:(NSDictionary *) args :(void (^)(NSString * _Nullable result,BOOL complete))completionHandler
 {
-    completionHandler([(NSString *)[args valueForKey:@"msg"] stringByAppendingString:@"[ asyn call]"],true);
+    completionHandler([(NSString *)[args valueForKey:@"msg"] stringByAppendingString:@"[ asyn call]"],YES);
 }
 
 - (NSString *)testNoArgSyn:(NSDictionary *) args
@@ -34,7 +34,7 @@ - (NSString *)testNoArgSyn:(NSDictionary *) args
 
 - ( void )testNoArgAsyn:(NSDictionary *) args :(void (^)(NSString * _Nullable result,BOOL complete))completionHandler
 {
-    completionHandler(@"testNoArgAsyn called [ asyn call]",true);
+    completionHandler(@"testNoArgAsyn called [ asyn call]",YES);
 }
 
 - ( void )callProgress:(NSDictionary *) args :(void (^)(NSString * _Nullable result,BOOL complete))completionHandler