diff --git a/main.py b/main.py
index 8792d52..98c65e5 100644
--- a/main.py
+++ b/main.py
@@ -5,7 +5,7 @@ import uuid
 
 # call sdtcloudpubsub
 sdtcloudMqttClient = sdtcloudpubsub.sdtcloudpubsub()
-mqttClient = sdtcloudMqttClient.setClient(f"device-app-{uuid.uuid1()}") # parameter is client ID(string)
+sdtcloudMqttClient.setClient(f"device-app-{uuid.uuid1()}") # parameter is client ID(string)
 
 # call sdtclouds3
 sdtcloudS3Client = sdtclouds3.sdtclouds3()
@@ -20,7 +20,7 @@ def runAction():
             "message": "Hello World",
             "uploadFile": result
         }
-        sdtcloudMqttClient.pubMessage(mqttClient, msg)
+        sdtcloudMqttClient.pubMessage(msg)
         time.sleep(10)
 
 if __name__ == "__main__":