Deadline monitoring - time definition

Hi expperts,

I set deadline monitoring and the definition is :

5 days after Work Item Creation

I want to define the time ( 5 days ) not hardcoded but using expression or container element or something like this.

Is it possible?

One more question.

in order to test the deadline monitoring, I defined 5 minutes instead of 5 days temporary for tests only in DEV environment.

Now I want to test it in QA environment and I need to do the tests in QA according to 5 minutes in order not to wait for days.

So after tests completion I need to transfer CR and  replace minutes ->> days.

Does anybody have another solution for this issue?

Thanks,

Nina