Hi arvin and welcome to Windows 7 Forums
Sorry, but you can't do that as SMART (if available and enabled) reads the necessary parameters directly from the drive(s). There is no way to directly change any of the values in the way you are asking.
I take it that you are developing a program that takes certain action(s) depending on the value(s) returned by SMART, correct?
What you could do, however, is to set up a dummy array with the same format as SMART and use that to test.