Hidden files not displayed despite using given command

[im-AMS]

Hi,
I use nvim on a mac with config from This repo
I entered let g:ranger_command_override = 'ranger --cmd "set show_hidden=true"' in the plug-config/ranger.vim

this is my config of ranger.vim

let g:ranger_command_override = 'ranger --cmd "set show_hidden=true"'
let g:ranger_replace_netrw = 1 "// open ranger when vim open a directory
"let g:NERDTreeHijackNetrw = 0 // add this line if you use NERDTree
let g:ranger_map_keys = 0