diff --git a/.env.example b/.env.example
index fa1420e..fa90fb8 100644
--- a/.env.example
+++ b/.env.example
@@ -12,4 +12,5 @@ ALLOWED_CHANNEL_IDS="C000000,C000001"
 
 SYSTEM_MESSAGE="너는 AWSKRUG(AWS Korea User Group)에서 친절하게 도움을 주는 구름이(Gurumi)야."
 
-MESSAGE_MAX="4000"
+MAX_LEN_SLACK="10000"
+MAX_LEN_BEDROCK="4000"
diff --git a/.github/workflows/push.yml b/.github/workflows/push.yml
index 7edf2fc..76378cb 100644
--- a/.github/workflows/push.yml
+++ b/.github/workflows/push.yml
@@ -6,15 +6,18 @@ on:
       - main
 
 env:
-  BOT_CURSOR: ${{ secrets.BOT_CURSOR }}
+  ALLOWED_CHANNEL_IDS: ${{ vars.ALLOWED_CHANNEL_IDS }}
+  BOT_CURSOR: ${{ vars.BOT_CURSOR }}
+  DYNAMODB_TABLE_NAME: ${{ vars.DYNAMODB_TABLE_NAME }}
+  ENABLE_IMAGE: ${{ vars.ENABLE_IMAGE }}
+  IMAGE_MODEL_ID: ${{ vars.IMAGE_MODEL_ID }}
+  SYSTEM_MESSAGE: ${{ vars.SYSTEM_MESSAGE }}
+  TEXT_MODEL_ID: ${{ vars.TEXT_MODEL_ID }}
+
+  AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
+  AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
   SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}
   SLACK_SIGNING_SECRET: ${{ secrets.SLACK_SIGNING_SECRET }}
-  DYNAMODB_TABLE_NAME: ${{ secrets.DYNAMODB_TABLE_NAME }}
-  TEXT_MODEL_ID: ${{ secrets.TEXT_MODEL_ID }}
-  IMAGE_MODEL_ID: ${{ secrets.IMAGE_MODEL_ID }}
-  SYSTEM_MESSAGE: ${{ vars.SYSTEM_MESSAGE }}
-  ALLOWED_CHANNEL_IDS: ${{ secrets.ALLOWED_CHANNEL_IDS }}
-  ENABLE_IMAGE: ${{ secrets.ENABLE_IMAGE }}
 
 jobs:
   deploy:
@@ -45,19 +48,15 @@ jobs:
 
       - name: Set up environment variables 📝
         run: |
+          echo "ALLOWED_CHANNEL_IDS=${ALLOWED_CHANNEL_IDS}" >> .env
           echo "BOT_CURSOR=${BOT_CURSOR}" >> .env
-          echo "SLACK_BOT_TOKEN=${SLACK_BOT_TOKEN}" >> .env
-          echo "SLACK_SIGNING_SECRET=${SLACK_SIGNING_SECRET}" >> .env
           echo "DYNAMODB_TABLE_NAME=${DYNAMODB_TABLE_NAME}" >> .env
-          echo "TEXT_MODEL_ID=${TEXT_MODEL_ID}" >> .env
+          echo "ENABLE_IMAGE=${ENABLE_IMAGE}" >> .env
           echo "IMAGE_MODEL_ID=${IMAGE_MODEL_ID}" >> .env
+          echo "SLACK_BOT_TOKEN=${SLACK_BOT_TOKEN}" >> .env
+          echo "SLACK_SIGNING_SECRET=${SLACK_SIGNING_SECRET}" >> .env
           echo "SYSTEM_MESSAGE=${SYSTEM_MESSAGE}" >> .env
-          echo "ALLOWED_CHANNEL_IDS=${ALLOWED_CHANNEL_IDS}" >> .env
-          echo "ENABLE_IMAGE=${ENABLE_IMAGE}" >> .env
+          echo "TEXT_MODEL_ID=${TEXT_MODEL_ID}" >> .env
 
       - name: Deploy to AWS Lambda 🚀
-        env:
-          AWS_REGION: 'us-east-1'
-          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
-          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
-        run: npx serverless deploy
+        run: npx serverless deploy --region us-east-1
diff --git a/handler.py b/handler.py
index 6023eb4..b6a1ad7 100644
--- a/handler.py
+++ b/handler.py
@@ -36,7 +36,11 @@
 # Set up System messages
 SYSTEM_MESSAGE = os.environ.get("SYSTEM_MESSAGE", "None")
 
-MESSAGE_MAX = int(os.environ.get("MESSAGE_MAX", 4000))
+MAX_LEN_SLACK = int(os.environ.get("MAX_LEN_SLACK", 10000))
+MAX_LEN_BEDROCK = int(os.environ.get("MAX_LEN_BEDROCK", 4000))
+
+COMMAND_DESCRIBE = "Describe the image in great detail as if viewing a photo."
+COMMAND_GENERATE = "Convert the above sentence into a command for stable-diffusion to generate an image within 1000 characters. Just give me a prompt."
 
 # Initialize Slack app
 app = App(
@@ -96,6 +100,8 @@ def chat_update(channel, ts, message, blocks=None):
 
     app.client.chat_update(channel=channel, ts=ts, text=text, blocks=blocks)
 
+    return message, ts
+
 
 def invoke_claude_3(content):
     """
@@ -229,7 +235,7 @@ def conversations_replies(channel, ts, client_msg_id):
 
             # print("conversations_replies: messages size: {}".format(sys.getsizeof(messages)))
 
-            if sys.getsizeof(messages) > MESSAGE_MAX:
+            if sys.getsizeof(messages) > MAX_LEN_BEDROCK:
                 messages.pop(0)  # remove the oldest message
                 break
 
@@ -276,9 +282,7 @@ def conversation(say: Say, thread_ts, content, channel, user, client_msg_id):
         if type == "image" and len(content) > 1:
             chat_update(channel, latest_ts, "이미지 감상 중... " + BOT_CURSOR)
 
-            content[0][
-                "text"
-            ] = "Describe the image in great detail as if viewing a photo."
+            content[0]["text"] = COMMAND_DESCRIBE
 
             # Send the prompt to Bedrock
             message = invoke_claude_3(content)
@@ -291,9 +295,7 @@ def conversation(say: Say, thread_ts, content, channel, user, client_msg_id):
         if type == "image":
             chat_update(channel, latest_ts, "이미지 생성 준비 중... " + BOT_CURSOR)
 
-            prompts.append(
-                "Convert the above sentence into a command for stable-diffusion to generate an image within 1000 characters. Just give me a prompt."
-            )
+            prompts.append(COMMAND_GENERATE)
 
             prompt = "\n\n\n".join(prompts)