Is there a way to reduce time from the war3source cooldown manager?

For instance, my plugin needs to subtract 5 seconds for each time a plyaer meets a certain critiera.

And, is there a way to increase time from the war3source cooldown manager?

Would like to be able to increase / decrease time in seconds.

Thanks for your help and time

I vaguely thought about doing that, but I wasn't sure if it would create another instances or not.  Or create some kind of problem other than that.