[Q] Usb key triggered action

I need to launch a tasker action by pressing a key on my external usb keyboard

old quicklaunch is burried but still functional, the problem is that uses ALT + key and NOT 1 key only. Can I change this?

OR

Can i create a custom layout file (/system/usr/keylayout/*.kl) to bind a specific keycode to ALT + key instead of single key?

thank you :)