need help how to use x264 --aq-mode 3 on ubuntu 18.04

[jono]

hybrid linux 2021.07.18.1

need help about how to use aq-mode 3 x264

on quantization tab, aq mode only has 3 option.
disabled
manual
automatic

when i try importing --aq-mode 3 on misc tab. The cli info became --aq-mode 0



i want to use aq-mode 3.