Jamf passive updates

[user-QyOakmTzBS]

Hello everyone. I use the script for passive update system:

https://github.com/coleseph/IT/blob/master/JAMF%20Passive%20Update%20Prompt/JAMF_Passive_Update_prom...

See the next error: Stopping execution with error: Error! 1st JAMF input variable null. Please define the desired OS version. Exiting script..

Can you please help me?