Hi ​@yesong.S ,

A straightforward approach for this is not available as you can't directly access system variables within the custom package code. Instead, try to pass the values of these system variables as parameters when invoking the custom package from your Automation task.

By passing these values as input parameters from the task to the package you can make it work.

​@yesong.S were you able to try any of these methods? Let us know what worked for you!