see this example ready for use: https://github.com/giuliomoro/bela-pd-keyboard. Note that only some keys are mapped to Pd all numbers and lowercase letters are mapped, and also these:
COMMA , \
DOT . \
SLASH / \
SPACE " " \
ENTER "\\\\n" \
SEMICOLON ";" \
APOSTROPHE "\\\\'" \
KPASTERISK "*" \
If you see keys that do not work, you need to add them to this list in generate-parse.sh
and run the script before rebuilding your project.