Find out when a counter changes?

Hello, i would like to know how to tell if a counter changes a value, then play an animation when that happens and another counter equals a value. Its set up to be (every random 5000 10000) set counter current value + random (-1, 1) and i would like an animation to play every time this changes and another counter equals something, for example both counters equal 5 then the counter changes to 7, play animation, but if the counter equals 7, and the other counter is 3 then changes to 4, dont play animation. I hope i explained well enough

You could store the counter's value to alterable value and then check if alterable value and counter value are different = launch your event.