Brightness Levels

I made a game in which you press both buttons at the same time to increase the LED brightness level back to default (255). As you rise the level, the symbol on the micro:bit changes to show when you reach 125 brightness level, as well as the orange LED turning on. Finally, the animation changes for the last time once you reach max brightness level and both LEDs are turned on. If you press only the A button, it resets the brightness level, however you need to press it twice to turn off the LEDs also. But the animation does not restart and I could not figure out how to restart it.