Sway: How to change brightness?

[sjug]

In i3 I used an xbacklight exec command.

Now in sway I get the error:
xbacklight: No outputs have backlight property

I have tried light-git from the AUR, but it doesn't do anything either.
I haven't seen any keybindings for XF86MonBrightness* in any sample configs either.

What works?

[aouelete]

I have been using light without any problems.

You can always use /sys/class/backlight, see https://wiki.archlinux.org/index.php/Backlight.

[sjug]

Thanks light did work just not the -m or -c flags, SAU does. Cheers @aouelete.