Brightness key remapping Fn+F11/F12 for Dell laptop

hi everyone, i need a little help for remapping brightness key. Mine are Fn+F11 for decrease, Fn+F12 for increase. I tried SSDT-BRT with BRT6 method and applied some patches but seem not work, still Fn+S and Fn+B
also is there anyway that dont apply BRT6 method to DSDT? Just using SSDT

https://preview.redd.it/i0vk63a7zgf51.png?width=1920&format=png&auto=webp&s=c2ef45dfa70573bbcd4a163cc5530c8d8024cec1