I use them as global variables and a global hash so that the subroutines permanently change them.

Don't do that. It's called action at a distance and it's considered a bad practice. Instead of modifying a global variable, you should return a value from entersys().

In reply to Re^3: prob w/ gatekeeper subroutine by rowdog
in thread prob w/ gatekeeper subroutine by weglarz

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