diff --git a/build.gradle b/build.gradle
index 27bdbecfd9a6282d2527be17038ebff9141705f1..3ae2dfc2e8aff7b1d4b0cec7e6b52904c2c8a1fb 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,14 +1,14 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 apply plugin: 'com.huawei.ohos.app'
 
-
+//For instructions on signature configuration, see https://developer.harmonyos.com/cn/docs/documentation/doc-guides/ide_debug_device-0000001053822404#ZH-CN_TOPIC_0000001154985555__section1112183053510
 ohos {
-    compileSdkVersion 6 
+    compileSdkVersion 6
     defaultConfig {
         compatibleSdkVersion 6
     }
 }
-	
+
 buildscript {
     repositories {
         maven {
@@ -17,11 +17,11 @@ buildscript {
         maven {
             url 'https://developer.huawei.com/repo/'
         }
-		jcenter()
+        jcenter()
     }
     dependencies {
-        classpath 'com.huawei.ohos:hap:2.4.4.2'
-        classpath 'com.huawei.ohos:decctest:1.2.4.0'
+        classpath 'com.huawei.ohos:hap:2.4.5.0'
+        classpath 'com.huawei.ohos:decctest:1.2.4.1'
     }
 }
 
@@ -33,6 +33,6 @@ allprojects {
         maven {
             url 'https://developer.huawei.com/repo/'
         }
-		jcenter()
+        jcenter()
     }
 }
diff --git a/entry/build.gradle b/entry/build.gradle
index bd89ee7d27dade11f3ef78ba2c0236202c6e93bf..23da3d885c2fd790273fba4eb933a5afef794865 100644
--- a/entry/build.gradle
+++ b/entry/build.gradle
@@ -3,7 +3,7 @@ apply plugin: 'com.huawei.ohos.decctest'
 ohos {
     compileSdkVersion 6
     defaultConfig {
-        compatibleSdkVersion 6
+        compatibleSdkVersion 5
     }
     buildTypes {
         release {
diff --git a/entry/src/main/java/com/jetradar/multibackstack/sample/MainCallBack.java b/entry/src/main/java/com/jetradar/multibackstack/sample/MainCallBack.java
deleted file mode 100644
index ae5ebbfcfba97ab199cf0a702a456d57ccc4696f..0000000000000000000000000000000000000000
--- a/entry/src/main/java/com/jetradar/multibackstack/sample/MainCallBack.java
+++ /dev/null
@@ -1,9 +0,0 @@
-package com.jetradar.multibackstack.sample;
-/**
- * MainCallBack
- *
- * @since 2021-06-10
- */
-public interface MainCallBack {
-
-}
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 0000000000000000000000000000000000000000..62bd9b9ccefea2b65ae41e5d9a545e2021b90a1d
--- /dev/null
+++ b/gradlew.bat
@@ -0,0 +1,103 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/multibackstack/build.gradle b/multibackstack/build.gradle
index 29231934ac368ab9c0731b0dca261212f7e289d4..7e1e475c1296e7c6d200a45810598ddff583ee7f 100644
--- a/multibackstack/build.gradle
+++ b/multibackstack/build.gradle
@@ -1,7 +1,6 @@
 apply plugin: 'com.huawei.ohos.library'
-//For instructions on signature configuration, see https://developer.harmonyos.com/cn/docs/documentation/doc-guides/ide_debug_device-0000001053822404#ZH-CN_TOPIC_0000001154985555__section1112183053510
 ohos {
-    compileSdkVersion 5
+    compileSdkVersion 6
     defaultConfig {
         compatibleSdkVersion 5
     }
diff --git a/multibackstack/src/main/java/com/jetradar/multibackstack/BaseAbilitySlice.java b/multibackstack/src/main/java/com/jetradar/multibackstack/BaseAbilitySlice.java
index ba3b98156be7c0f293e22e518404714bb3ab7935..4be1b188b72c0a7d59fbc337e49dbb42309d62c7 100644
--- a/multibackstack/src/main/java/com/jetradar/multibackstack/BaseAbilitySlice.java
+++ b/multibackstack/src/main/java/com/jetradar/multibackstack/BaseAbilitySlice.java
@@ -33,7 +33,6 @@ public abstract class BaseAbilitySlice extends AbilitySlice implements CallBack
                     list.add(action1);
                 }
             }
-
         }
         list.add(action1);
     }
diff --git a/multibackstack/src/main/java/com/jetradar/multibackstack/bean/Action.java b/multibackstack/src/main/java/com/jetradar/multibackstack/bean/Action.java
index 74670026cb241487e55951731203bb16bfb56683..a163fb4fe81999656b126ba4b4750314df9b5237 100644
--- a/multibackstack/src/main/java/com/jetradar/multibackstack/bean/Action.java
+++ b/multibackstack/src/main/java/com/jetradar/multibackstack/bean/Action.java
@@ -1,3 +1,17 @@
+/*
+ * Copyright (C) 2021 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.jetradar.multibackstack.bean;
 
 import ohos.aafwk.ability.fraction.Fraction;
diff --git a/settings.gradle b/settings.gradle
deleted file mode 100644
index 2f6e2acd32543c5b0c66caf779af16b17aee5227..0000000000000000000000000000000000000000
--- a/settings.gradle
+++ /dev/null
@@ -1 +0,0 @@
-include ':entry', ':multibackstack'