Bukkit

What is the enhancement in mind? How should it look and feel?
If you have longer total time than a new total-time reward (e.g. I've been online for 3 hours and I created a new award for 15 min total), this award won't be effective to you, and only new players who reach 15 min total can receive the award.

Please provide any additional information below.
I have 2 ideas about the solution:
1. a command to manually check specific reward for all players beyond the time requirement.
2. check all players when creating new commands (may cause trouble if edit yml)