how do I set active lock version 1.6 (I also have 1.5)
to 31 day trail version?

I'm dont know how to use active lock, I make my own little serial number program, and all I need active lock for is to make my program only avablibe for 31 days

And Also, if the 31 day trial is over, then what if the user downloads it again, will it say that the trial is over, or will it continue?