How to customise vim-sneak

[angelechoes]

I've enabled vim-sneak and have told VSCode to use settings from my ~/.vimrct as shown here in my settings.json

"vim.vimrc.enable": true,
"vim.sneak": true,

And my .vimrc contains the following lines which replace the regular vim-sneak commands for moving forward/backward in sneak hits from ; and , respectively to 'n' and 'N' (to give it behaviour similar to regular search using /):

" sneak remaps
map n <Plug>Sneak_;
map N <Plug>Sneak_,

These remaps work in regular vim or inside my terminal but they don't work in vs code vim. I'm guessing thus may be related to the fact my .vimrc is using vim-plug to define the remapping? Is there some other way to specify this to get it to work in vs code vim?