timer reward system

Hi I have developed a timer reward system, being that if my player touches the reward he has time deducted from the timer.. a good thing. The thing is that when I set the reward value to say 1, the clock is set back approximately 8 seconds. When I set it to say 3 it is set back about 24, @ 7 it is set back about 60.

I placed echos inside my relevant functions and studies what was happening. The thing that puzzles me is that onCollision, when player touches the reward the clock is not set back from say 33 to 25 instantly, but that it goes down intermittently from 33, 32, 31, and so on until it reaches 25. Why would it not just jump back to the appropriate frame number? And why does it jump back to numbers which are not the expected value?

///part of the reward behavior
function reward2::giveToTemple(%this)
{
	%bouncer = %this.bouncer.getBehavior("timerBehavior");
	if(!isObject(%bouncer))
	return;
	
	$currentTimeSeconds -= %this.timeValue;
	%bouncer.updateSeconds();
}


////part of the timer behavior
function timerBehavior::updateSeconds(%this)
{
	%this.seconds.setFrame($currentTimeSeconds);	
}

of note, if the jump back exceeds 0, there is a delay in when the clock resets. as in, if say the jump is a value of 20, but the clock is at 15 when the jump occurs a 5 second delay occurs until the clock is started again.