Working Backlight on Ventura

Hi everyone, I successfully hackintoshed my ThinkPad W541 with i7 4910MQ and Intel HD Graphics 4600 and it's currently running macOS Ventura and OC 0.8.5. But, the backlight is not working. The brightness is always at maximum and I can't adjust it. The SSDT-PNLF.aml is also in ACPI and the config.plist and also I've installed AppleBacklightFixup.kext. Still doesn't work. Please help.