brightnesUP and brightnessDown via REST

[ts-sz]

Hello,
that would be so cool to control brightness UP/DOWN via REST.

I use actualy a node-red in docker (raspberry).
curl -o /dev/null -s -H "Content-Type:application/json" -X POST http://wemis.local/BrightnessUp?value=10
or
curl -o /dev/null -s -H "Content-Type:application/json" -X POST http://wemis.local/BrightnessDown?value=10
in other words push up/down brightness by 10
Thanks