Countdown Timer

  • Hi Everyone,
    New to the community and UIFlow / Coding in general.
    Trying to create a countdown timer that starts when button A is pushed and stop when timer hits "0"
    So far I can make the timer start by pushing button A and stop by pushing button B.
    How do you make a timer function stop when "0" is reached and reset?
    Here is a screen shot of what I have so far.

    0_1704507005364_M5Stack Core2 Countdown timer.png