diff --git a/main.py b/main.py
index 98e7cc4..73f9b2c 100644
--- a/main.py
+++ b/main.py
@@ -4,7 +4,7 @@ import uuid
 import random
 
 sdtcloud = sdtcloudnodeqmqtt.sdtcloudnodeqmqtt()
-mqttClient = sdtcloud.setClient(f"device-app-{uuid.uuid1()}") # parameter is client ID(string)
+sdtcloud.setClient(f"device-app-{uuid.uuid1()}") # parameter is client ID(string)
 
 def runAction():
     while True:
@@ -13,7 +13,7 @@ def runAction():
 	    "device_type": "gas",
 	    "pulse_count": random.randint(0, 1)
 	}]	
-        sdtcloud.pubMessage(mqttClient, msg)
+        sdtcloud.pubMessage(msg)
         time.sleep(10)
 
 if __name__ == "__main__":