diff --git a/AR-Android-Tutorial-1to1/sample/app/build.gradle b/AR-Android-Tutorial-1to1/sample/app/build.gradle
index f59e2d0..f83a096 100644
--- a/AR-Android-Tutorial-1to1/sample/app/build.gradle
+++ b/AR-Android-Tutorial-1to1/sample/app/build.gradle
@@ -36,5 +36,5 @@ dependencies {
     androidTestImplementation 'androidx.test.ext:junit:1.1.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
     implementation project(path: ':logger')
-    implementation 'org.ar:rtc:4.0.1.0'
+    implementation 'org.ar:rtc:4.1.0.1'
 }
\ No newline at end of file
diff --git a/AR-Android-Tutorial-1to1/sample/app/src/main/java/org/ar/ar_android_tutorial_1to1/VideoActivity.java b/AR-Android-Tutorial-1to1/sample/app/src/main/java/org/ar/ar_android_tutorial_1to1/VideoActivity.java
index 7b61e96..805e7b8 100644
--- a/AR-Android-Tutorial-1to1/sample/app/src/main/java/org/ar/ar_android_tutorial_1to1/VideoActivity.java
+++ b/AR-Android-Tutorial-1to1/sample/app/src/main/java/org/ar/ar_android_tutorial_1to1/VideoActivity.java
@@ -35,7 +35,6 @@ public class VideoActivity extends AppCompatActivity implements View.OnClickList
     private ImageView ivSwitch,ivMuteAudio,ivMuteVideo,ivCall;
     private LoggerRecyclerView mLogView;
     private String userId = String.valueOf((int) ((Math.random() * 9 + 1) * 100000));
-    private String CHANNEL_NAME = "808080";
     private RtcEngine mRtcEngine;
     private boolean mCallEnd;
     private String remoteId= "";
@@ -93,7 +92,7 @@ private void initializeEngine() {
 
 
     private void joinChannel() {
-        mRtcEngine.joinChannel("", CHANNEL_NAME, "Extra Optional Data",userId );
+        mRtcEngine.joinChannel("", getResources().getString(R.string.channel), "Extra Optional Data",userId );
     }
 
     private void leaveChannel() {
@@ -183,7 +182,7 @@ private void setupRemoteVideo(String uid) {
             remoteId = uid;
             TextureView mRemoteView = RtcEngine.CreateRendererView(getBaseContext());
             rlRemote.addView(mRemoteView);
-            mRtcEngine.setupRemoteVideo(new VideoCanvas(mRemoteView, Constants.RENDER_MODE_HIDDEN,CHANNEL_NAME, uid,Constants.VIDEO_MIRROR_MODE_DISABLED));
+            mRtcEngine.setupRemoteVideo(new VideoCanvas(mRemoteView, Constants.RENDER_MODE_HIDDEN,getResources().getString(R.string.channel), uid,Constants.VIDEO_MIRROR_MODE_DISABLED));
     }
 
 
@@ -201,7 +200,6 @@ private void removeLocalVideo() {
         }
     }
     private void startCall() {
-//        initializeEngine();
         setupLocalVideo();
         joinChannel();
     }
diff --git a/AR-Android-Tutorial-1to1/sample/app/src/main/res/values/strings_config.xml b/AR-Android-Tutorial-1to1/sample/app/src/main/res/values/strings_config.xml
index fdc9d9f..a833482 100644
--- a/AR-Android-Tutorial-1to1/sample/app/src/main/res/values/strings_config.xml
+++ b/AR-Android-Tutorial-1to1/sample/app/src/main/res/values/strings_config.xml
@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string translatable="false" name="app_id"></string>
+    <string translatable="false" name="channel">808080</string>
 </resources>
diff --git a/SDK/rtc-release.aar b/SDK/rtc-release.aar
index af8a719..5ae7e4f 100644
Binary files a/SDK/rtc-release.aar and b/SDK/rtc-release.aar differ