co1tinhiu

Hello. I have made my slider of brightness control work well by using these above files and folder. But my brightness key (f11 for down and f12 for up) is working incorrect. When I press f11, my brightness level goes down to 0 and my screen is completely black. When I press f12, nothing happens. Anyone can show me how to fix this error. Thank you in advanced and sorry for my bad English skill.