You're already using Exporter.

Exporter is capable of exporting variables as well as subs.

Is there a reason you aren't just exporting your $var, which would make it a member of both namespaces?

In prog.pl: 

#!/usr/bin/env perl

use strict;
use warnings;
use 5.010;

use lib '.';
use MyModule;

my_sub;

say "Main program: $var";

[download]
In MyModule.pm: 
package MyModule;

use strict;
use warnings;
use 5.010;

use base 'Exporter';

our $var;

our @EXPORT = qw( my_sub $var );

sub my_sub {
  $var = 42;

  say "Set \$var to $var in my_sub";
}

[download]
Result: 
$ ./prog.pl 
Set $var to 42 in my_sub
Main program: 42

[download]

In reply to Re: Set a variable in calling package by dsheroh
in thread Set a variable in calling package by TerryBerry

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