Oh, Why you didn't? First I should say, the animation that I sent, ends after the reduction tween, and is not loop or haven't any series. (so you shouldn't wait for the second action)
Ok. Now I will explain more about the request: As you know, at the first time, the burned area, is equal to [main_bar - (fast_border - fast_bar)].
What happen after pressing submit button? I want to show what happen with a tween animation. If you didn't understand my purpose, let me to make a second animation for you.