diff --git a/samples/bot-proactive-messaging-teamsfx/.vscode/tasks.json b/samples/bot-proactive-messaging-teamsfx/.vscode/tasks.json
index a7ec495b43..850692c978 100644
--- a/samples/bot-proactive-messaging-teamsfx/.vscode/tasks.json
+++ b/samples/bot-proactive-messaging-teamsfx/.vscode/tasks.json
@@ -53,8 +53,8 @@
                         "access": "public",
                         "writeToEnvironmentFile": {
                             // Keep consistency with upgraded configuration.
-                            "endpoint": "PROVISIONOUTPUT__BOTOUTPUT__SITEENDPOINT",
-                            "domain": "PROVISIONOUTPUT__BOTOUTPUT__VALIDDOMAIN"
+                            "endpoint": "PROVISIONOUTPUT_BOTOUTPUT_SITEENDPOINT",
+                            "domain": "PROVISIONOUTPUT_BOTOUTPUT_VALIDDOMAIN"
                         }
                     }
                 ],
diff --git a/samples/bot-proactive-messaging-teamsfx/README.md b/samples/bot-proactive-messaging-teamsfx/README.md
index b5fb7fea92..52180e8783 100644
--- a/samples/bot-proactive-messaging-teamsfx/README.md
+++ b/samples/bot-proactive-messaging-teamsfx/README.md
@@ -16,10 +16,10 @@ This sample bot showcases proactive messaging capabilities in Microsoft Teams by
   - Install [dev tunnel cli](https://aka.ms/teamsfx-install-dev-tunnel).
   - Login with your M365 Account using the command `devtunnel user login`.
   - Start your local tunnel service by running the command `devtunnel host -p 3978 --protocol http --allow-anonymous`.
-  - In the `env/.env.local` file, fill in the values for `PROVISIONOUTPUT__BOTOUTPUT__VALIDDOMAIN` and `PROVISIONOUTPUT__BOTOUTPUT__SITEENDPOINT` with your dev tunnel URL.
+  - In the `env/.env.local` file, fill in the values for `PROVISIONOUTPUT_BOTOUTPUT_VALIDDOMAIN` and `PROVISIONOUTPUT_BOTOUTPUT_SITEENDPOINT` with your dev tunnel URL.
     ```
-    PROVISIONOUTPUT__BOTOUTPUT__VALIDDOMAIN=sample-id-3978.devtunnels.ms
-    PROVISIONOUTPUT__BOTOUTPUT__SITEENDPOINT=https://sample-id-3978.devtunnels.ms
+    PROVISIONOUTPUT_BOTOUTPUT_VALIDDOMAIN=sample-id-3978.devtunnels.ms
+    PROVISIONOUTPUT_BOTOUTPUT_SITEENDPOINT=https://sample-id-3978.devtunnels.ms
     ```
   - Executing the command `teamsapp provision --env local` in your project directory.
   - Executing the command `teamsapp deploy --env local` in your project directory.
diff --git a/samples/bot-proactive-messaging-teamsfx/aad.manifest.json b/samples/bot-proactive-messaging-teamsfx/aad.manifest.json
index c6046e0344..9cb0d8cdaf 100644
--- a/samples/bot-proactive-messaging-teamsfx/aad.manifest.json
+++ b/samples/bot-proactive-messaging-teamsfx/aad.manifest.json
@@ -1,6 +1,6 @@
 {
     "id": "${{AAD_APP_OBJECT_ID}}",
-    "name": "${{CONFIG__MANIFEST__APPNAME__SHORT}}-aad",
+    "name": "${{CONFIG_APPNAME_SHORT}}-aad",
     "accessTokenAcceptedVersion": 2,
     "signInAudience": "AzureADMyOrg",
     "optionalClaims": {
@@ -93,7 +93,7 @@
     ],
     "replyUrlsWithType": [
         {
-            "url": "${{PROVISIONOUTPUT__BOTOUTPUT__SITEENDPOINT}}/auth-end.html",
+            "url": "${{PROVISIONOUTPUT_BOTOUTPUT_SITEENDPOINT}}/auth-end.html",
             "type": "Web"
         }
     ]
diff --git a/samples/bot-proactive-messaging-teamsfx/appPackage/manifest.json b/samples/bot-proactive-messaging-teamsfx/appPackage/manifest.json
index 17ffda814b..58591c81de 100644
--- a/samples/bot-proactive-messaging-teamsfx/appPackage/manifest.json
+++ b/samples/bot-proactive-messaging-teamsfx/appPackage/manifest.json
@@ -14,12 +14,12 @@
         "outline": "resources/outline.png"
     },
     "name": {
-        "short": "${{CONFIG__APPNAME__SHORT}}",
-        "full": "${{CONFIG__MANIFEST__APPNAME__FULL}}"
+        "short": "${{CONFIG_APPNAME_SHORT}}",
+        "full": "${{CONFIG_MANIFEST_APPNAME_FULL}}"
     },
   "description": {
-    "short": "Bot sample for proactive notifications ${{CONFIG__MANIFEST__APPNAME__SHORT}}",
-    "full": "This bot sends proactive reminders by saving conversation references in Teams. ${{CONFIG__MANIFEST__APPNAME__SHORT}}"
+    "short": "Bot sample for proactive notifications ${{CONFIG_APPNAME_SHORT}}",
+    "full": "This bot sends proactive reminders by saving conversation references in Teams. ${{CONFIG_APPNAME_SHORT}}"
   },
     "accentColor": "#FFFFFF",
     "bots": [
@@ -61,6 +61,6 @@
         "messageTeamMembers"
     ],
     "validDomains": [
-        "${{PROVISIONOUTPUT__BOTOUTPUT__VALIDDOMAIN}}"
+        "${{PROVISIONOUTPUT_BOTOUTPUT_VALIDDOMAIN}}"
     ]
 }
\ No newline at end of file
diff --git a/samples/bot-proactive-messaging-teamsfx/bot/teamsBot.js b/samples/bot-proactive-messaging-teamsfx/bot/teamsBot.js
index ce195ed28a..858de531bb 100644
--- a/samples/bot-proactive-messaging-teamsfx/bot/teamsBot.js
+++ b/samples/bot-proactive-messaging-teamsfx/bot/teamsBot.js
@@ -25,7 +25,7 @@ class TeamsBot extends TeamsActivityHandler {
       
       for (let cnt = 0; cnt < membersAdded.length; cnt++) {
         if (membersAdded[cnt].id !== context.activity.recipient.id) {
-          const welcomeMessage = `Welcome to the Proactive Bot sample.  Navigate to ${process.env.PROVISIONOUTPUT__BOTOUTPUT__SITEENDPOINT}/api/notify to proactively message everyone who has previously messaged this bot.`;
+          const welcomeMessage = `Welcome to the Proactive Bot sample.  Navigate to ${process.env.PROVISIONOUTPUT_BOTOUTPUT_SITEENDPOINT}/api/notify to proactively message everyone who has previously messaged this bot.`;
           await context.sendActivity(welcomeMessage);
         }
       }
@@ -38,7 +38,7 @@ class TeamsBot extends TeamsActivityHandler {
       this.addConversationReference(context.activity);
 
       // Echo back what the user said
-      await context.sendActivity(`You sent '${context.activity.text}'. Navigate to ${process.env.PROVISIONOUTPUT__BOTOUTPUT__SITEENDPOINT}/api/notify to proactively message everyone who has previously messaged this bot.`);
+      await context.sendActivity(`You sent '${context.activity.text}'. Navigate to ${process.env.PROVISIONOUTPUT_BOTOUTPUT_SITEENDPOINT}/api/notify to proactively message everyone who has previously messaged this bot.`);
       await next();
     });
 
diff --git a/samples/bot-proactive-messaging-teamsfx/env/.env.local b/samples/bot-proactive-messaging-teamsfx/env/.env.local
index f562e15ca3..bc11933838 100644
--- a/samples/bot-proactive-messaging-teamsfx/env/.env.local
+++ b/samples/bot-proactive-messaging-teamsfx/env/.env.local
@@ -1,9 +1,9 @@
 # This file includes environment variables that can be committed to git. It's gitignored by default because it represents your local development environment.
 TEAMSFX_ENV=local
 APP_NAME_SUFFIX=local
-CONFIG__MANIFEST__APPNAME__SHORT=ProactiveMessagesTeamsFx
-CONFIG__MANIFEST__APPNAME__FULL=Full name for ProactiveMessagesTeamsFx
-CONFIG__MANIFEST__DESCRIPTION__SHORT=Short description of ProactiveMessagesTeamsFx
-CONFIG__MANIFEST__DESCRIPTION__FULL=Full description of ProactiveMessagesTeamsFx
-CONFIG__MANIFEST__ICONS__COLOR=resources/color.png
-CONFIG__MANIFEST__ICONS__OUTLINE=resources/outline.png
+CONFIG_APPNAME_SHORT=ProactiveMessagesTeamsFx
+CONFIG_MANIFEST_APPNAME_FULL=Full name for ProactiveMessagesTeamsFx
+CONFIG_MANIFEST_DESCRIPTION_SHORT=Short description of ProactiveMessagesTeamsFx
+CONFIG_MANIFEST_DESCRIPTION_FULL=Full description of ProactiveMessagesTeamsFx
+CONFIG_MANIFEST_ICONS_COLOR=resources/color.png
+CONFIG_MANIFEST_ICONS_OUTLINE=resources/outline.png
diff --git a/samples/bot-proactive-messaging-teamsfx/teamsapp.local.yml b/samples/bot-proactive-messaging-teamsfx/teamsapp.local.yml
index 6d6991327c..c6b8e4c3a3 100644
--- a/samples/bot-proactive-messaging-teamsfx/teamsapp.local.yml
+++ b/samples/bot-proactive-messaging-teamsfx/teamsapp.local.yml
@@ -16,7 +16,7 @@ provision:
 
   - uses: botAadApp/create # Creates a new AAD app for bot if BOT_ID environment variable is empty
     with:
-      name: ${{CONFIG__MANIFEST__APPNAME__SHORT}}-bot
+      name: ${{CONFIG_APPNAME_SHORT}}-bot
     writeToEnvironmentFile:
       botId: BOT_ID
       botPassword: SECRET_BOT_PASSWORD
@@ -25,8 +25,8 @@ provision:
   - uses: botFramework/create
     with:
       botId: ${{BOT_ID}}
-      name: ${{CONFIG__MANIFEST__APPNAME__SHORT}}-bot
-      messagingEndpoint: ${{PROVISIONOUTPUT__BOTOUTPUT__SITEENDPOINT}}/api/messages
+      name: ${{CONFIG_APPNAME_SHORT}}-bot
+      messagingEndpoint: ${{PROVISIONOUTPUT_BOTOUTPUT_SITEENDPOINT}}/api/messages
       description: ""
       channels:
         - name: msteams
@@ -59,7 +59,7 @@ deploy:
     with:
       target: ./bot/.env.teamsfx.local
       envs:
-        INITIATE_LOGIN_ENDPOINT: ${{PROVISIONOUTPUT__BOTOUTPUT__SITEENDPOINT}}/auth-start.html
+        INITIATE_LOGIN_ENDPOINT: ${{PROVISIONOUTPUT_BOTOUTPUT_SITEENDPOINT}}/auth-start.html
         M365_APPLICATION_ID_URI: api://botid-${{BOT_ID}}
 
   # Run npm command
diff --git a/samples/bot-proactive-messaging-teamsfx/templates/azure/teamsFx/bot.bicep b/samples/bot-proactive-messaging-teamsfx/templates/azure/teamsFx/bot.bicep
index 8b6ac28eb8..0a87e63345 100644
--- a/samples/bot-proactive-messaging-teamsfx/templates/azure/teamsFx/bot.bicep
+++ b/samples/bot-proactive-messaging-teamsfx/templates/azure/teamsFx/bot.bicep
@@ -19,6 +19,6 @@ resource botWebAppSettings 'Microsoft.Web/sites/config@2021-02-01' = {
     BOT_ID: botId // ID of your bot
     BOT_PASSWORD: botAadAppClientSecret // Secret of your bot
     IDENTITY_ID: provisionOutputs.identityOutput.value.identityClientId // User assigned identity id, the identity is used to access other Azure resources
-    PROVISIONOUTPUT__BOTOUTPUT__SITEENDPOINT : provisionOutputs.botOutput.value.siteEndpoint // Site endpoint of AAD application
+    PROVISIONOUTPUT_BOTOUTPUT_SITEENDPOINT : provisionOutputs.botOutput.value.siteEndpoint // Site endpoint of AAD application
   }, currentAppSettings)
 }