Vim command :inoremap <C-l> <Right> not working

I want to remap CTRL H J K L to arrow keys. I installed the Obsidian Vimrc plugin (their repo says to post here for help first) and I have this:

imap <C-h> <Left>
imap <C-j> <Down>
imap <C-k> <Up>
imap <C-l> <Right>

The first three lines work but not the last one.