Help me find a working ahk pixel-trigger bot

Tonesoi,
#NoEnv
#Persistent
#MaxThreadsPerHotkey 2
#KeyHistory 0
ListLines Off
SetBatchLines, -1
SetKeyDelay, -1, -1
SetMouseDelay, -1
SetDefaultMouseSpeed, 0
SetWinDelay, -1
SetControlDelay, -1
SendMode Input
CoordMode, Pixel, Screen

; HOTKEYS
key_hold_mode := "alt" ; scan will only scan if "key_hold" is pressed
key_exit := "End" ; self explanatory
key_hold := "Shift" ; key that you hold to scan (example "T")

; SETTINGS
global pixel_box := 3 ; Keep between min 3 and max 8
global pixel_sens := 56 ; higher/lower = more/less color sensitive
global pixel_color := 0xFEFE40 ; yellow="0xFEFE40", purple="0xA145A3"
global tap_time := 50 ; Delay in ms between shots when triggered
global always_enabled := true ; Whether the script always runs or not

leftbound := A_ScreenWidth / 2 - pixel_box
rightbound := A_ScreenWidth / 2 + pixel_box
topbound := A_ScreenHeight / 2 - pixel_box
bottombound := A_ScreenHeight / 2 + pixel_box

hotkey, %key_hold_mode%, holdmode_on
hotkey, %key_exit%, terminate
return

start:
SoundBeep, 500, 1000
return

terminate:
SoundPlay off
SoundBeep, 500, 500
Sleep 400
exitapp
return

holdmode_on:
SoundPlay, C:\Windows\Media\chimes.wav
if (always_enabled)
settimer, loop2, 1
else
settimer, loop2, % (GetKeyState(key_hold) ? 1 : "off")
return

loop2:
if (always_enabled || GetKeyState(key_hold))
PixelSearch()
Sleep 1
return

PixelSearch() {
global pixel_box, pixel_sens, pixel_color, tap_time
global FoundX, FoundY, leftbound, topbound, rightbound, bottombound
PixelSearch, FoundX, FoundY, leftbound, topbound, rightbound, bottombound, pixel_color, pixel_sens, Fast RGB
If !(ErrorLevel)
{
If !GetKeyState("LButton")
{
click
sleep %tap_time%
}
}
return
}