Arrow keys not working

Hello! I am having this in my skhdrc, but the arrow keys does not work. What is wrong?
lctrl + alt - 0x7B : yabai -m window --focus west
lctrl + alt - 0x7D : yabai -m window --focus south
lctrl + alt - 0x7C : yabai -m window --focus east
lctrl + alt - 0x7E : yabai -m window --focus north

Reproduce the four bindings shown in skhdrc with yabai and confirm whether the directional commands work when invoked directly. Then inspect skhd's handling of the 0x7B, 0x7D, 0x7C, and 0x7E keycodes; done means the four lctrl+alt bindings focus west, south, east, and north.

Written by the indexing model from the issue text.