Write to and read from file descriptors in awk

I am trying to write to one file descriptor and then read the output from another file descriptor in awk.

Code:#!/usr/bin/env bash

coproc get_icon_from_path_stdin

exec 10>&"${COPROC[1]}"
exec 11<&"${COPROC[0]}"

awk '{ print $0 > /dev/fd/10
getline result < /dev/fd/11
print result }' $HOME/.dotfiles/rofi-bookmarks-listHere `result` returning null values.

Not understanding the problem here.