Unhandled exception: Error: display brightness value is invalid

[1GR3]

I've built a clockface back in the 2019 and now I'm trying to make some updates but it seems like in SDK v4.3 I can't control the brightness of display anymore:

var  flashlightToggle = function() {
  if (flash.style.opacity == 0) {
    flashlightOn();
  } else {
    flashlightOff();
  }
};
var  flashlightOn = function() {
  flash.style.opacity = 1;
  display.autoOff = false;
  display.brightnessOverride = 1.0;
};
var  flashlightOff = function() {
  flash.style.opacity = 0;
  display.autoOff = true;
  display.brightnessOverride = undefined;
};

In this context, flash is a white rectangle that takes the whole screen, and when triggered, acts like a flashlight and helps me find my way to bed every evening.

Using auto-brightness in situations where you need a flashlight doesn't make sense. 
How can I get this functionality back?

[Gondwana · Accepted solution]

The API has changed for .autoOff and brighnessOverride (see here). autoOff will be a problem because of AOD.

[1GR3]

Thanks, this was really helpful! Maybe putting display to be always on isn't the best solution. I'll try to set the timer instead.

[1GR3]

I've made an update and even though it doesn't trow an error anymore, it does not work in practice. My "flashlight" is now almost useless 😞

var  flashlightToggle = function() {
  if (flash.style.opacity == 0) {
    flashlightOn();
  } else {
    flashlightOff();
  }
};
var  flashlightOn = function() {
  flash.style.opacity = 1;
  display.autoOff = false;
  //display.brightnessOverride = 1.0;
  display.DisplayBrightnessValue = "max";
};
var  flashlightOff = function() {
  flash.style.opacity = 0;
  display.autoOff = true;
  // display.brightnessOverride = undefined;
  display.DisplayBrightnessValue = "normal";
};

How can I fix it?!?

[Guy_]

Hi @1GR3 - what doesn't it do that it should?

You may want to look at the Display API and detect if the display goes off.