Default [Q] Remap long press recent apps button

Hello I've installed Liberty S4 MAX Rom and is working perfectly only three dots menu is missing in this ROM. I want to remap long pres in recent apps button to show menu.

I've found this:
Edit usr/keylayout/cy8c-touchkey.kl
change the thrid line
from:
key 249 APP_SWITCH
to
key 249 MENU
But it is to replace recent apps with menu and I want than menu appears only with long press.

Any ideas? Thanks!