Help you will certainly find here in abundance.   Your problem is a missing use statement, methinks.   In one module you must say what is exported; in its clients, you must tell Perl to use it.

There are wretched situations out there just like the one I described, especially for “captive audiences” in foreign countries on work-visas.   I feared that you had become caught in one...   The word, “extreme™” has become to me a bellwether of abusive practices.   If false alarm, great.