OpenFileFillWeeklyTimeArray::$WeeklyTimeArrayRef is not the correct way how to fully qualify a variable. Use

$OpenFileFillWeeklyTimeArray::WeeklyTimeArrayRef
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Without seeing your code, I can't say how Perl discovered that $OFFWTA_WeeklyTimeArrayRef is the same as $OpenFileFillWeeklyTimeArray::WeeklyTimeArrayRef (or at least, as references, their references are the same). Generally, it doesn't work:

#!/usr/bin/perl
use warnings;
use strict;

{   package SomeVeryLongPackageName::ToBeBoringToType;

    our $PackageArrayRef = [];

    sub init {
        push @$PackageArrayRef, localtime, @_;
    }

}

our $SVLPNTBBTT_PackageArrayRef; # How did you tell Perl this is the s
+ame ref?

SomeVeryLongPackageName::ToBeBoringToType::init(1);
print join "\n", @$SomeVeryLongPackageName::ToBeBoringToType::PackageA
+rrayRef;
print join "\n", @$SVLPNTBBTT_PackageArrayRef;
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