FMB640 response for setparam

Hi, I am facing issue while sending "Setparam" message to device FMB640. I am not getting any response from the device. while sending message "getparam" message to device, i get response. could not able to understand issue.

Send message is " setparam 30001:8B00000186394A01". Please let me know what difficulty i am facing or what further configuration that i need to do.

Please also let me know whether I need to remove authorization key for i button i.e.8B00000186394A01 at AVL id 30001. or i just need to send new authorization key to AVL ID 30001.