^^^Yep, that makes perfect sense, I understand. Last year I didn't get it yet though. The bad code I had last year was this:
<img src="http://farm4.static.flickr.com/3553/5814162638_5f7c9897c5_z.jpg">
^^^When I input the code last year I didn't realize that by using add to value and not adding any other conditions into the mix, I'd be adding the number constantly rather than just one time and then stop. So when I went into the next layout the clock would read out a number like :-0 or disappear because the numbers didn't jive right. I guess at the time I thought because it says "add to value" it would just add a number to it once based on the event and stop until the event repeats itself or another event is connected to it in some way. I of course was wrong and didn't understand a way around it, but that was last year.
My new code this year which works perfectly is:
<img src="http://farm4.static.flickr.com/3345/5813596579_9c2fefcae8.jpg">
On this one, I have the Global Variable in Line 6 set to "Greater than 45" because in a corresponding layout the value is set to be greater than 45, so when the game jumps back to the layout of the code I posted, the timer will reset back to :45 exactly the way I want it.