Brightness control with different behavior 32/64 bit

[Minox 7]

Hi all, I have a code to maximize and minimize screen brightness for android app, which works fine in 32bit, but not in 64bit. Here is the code:

 

USES Androidapi.JNI.GraphicsContentViewText, Androidapi.Helpers;


procedure TForm1.Button1Click(Sender: TObject); //min
      VAR appParam : JWindowManager_LayoutParams;
    begin
          appParam := TAndroidHelper.Activity.getWindow.getAttributes;
          appParam.screenBrightness := TJWindowManager_LayoutParams.JavaClass.BRIGHTNESS_OVERRIDE_OFF;
          TAndroidHelper.Activity.getWindow.setAttributes(appParam);
    end;

procedure TForm1.Button2Click(Sender: TObject); //max
      VAR appParam : JWindowManager_LayoutParams;
    begin
          appParam := TAndroidHelper.Activity.getWindow.getAttributes;
          appParam.screenBrightness := TJWindowManager_LayoutParams.JavaClass.BRIGHTNESS_OVERRIDE_FULL;
          TAndroidHelper.Activity.getWindow.setAttributes(appParam);
    end;

procedure TForm1.Button3Click(Sender: TObject); //norm
      VAR appParam : JWindowManager_LayoutParams;
    begin
          appParam := TAndroidHelper.Activity.getWindow.getAttributes;
          appParam.screenBrightness := TJWindowManager_LayoutParams.JavaClass.BRIGHTNESS_OVERRIDE_NONE;
          TAndroidHelper.Activity.getWindow.setAttributes(appParam);
    end;

 

I don't understand why it doesn't work, do I have to ask permission for the 64bit app and manually change the brightness?