How do I set an alarm sound when energy is low

I tried setting a global variable and, when below a certain number, a "warning alarm" goes off.

But when the number goes back up, it won't shut off.

I tried:

health < 20

alarmOn = false ..... Play "alarm" sound, alarmON = true

health > 20

alarmOn = true ......Stop "alarm" sound, alarmON = false

and no go.

Any help will be appreciated.

Make alarmOn a global variable and use 0 for FALSE and use 1 for TRUE

alarmOn = 1 > Play "alarm"

alarmOn = 0 > Stop "alarm"

health<20 > Set alarmOn "1"

health>20 > Set alarmOn "0"

You can also try a every x seconds with else:

Health < 20

Every x seconds - play alarm

Else - stop alarm