By declaring $oui_location with my, you've made it lexically scoped and unavailable to your other packages. There are a variety of strategies to deal with this. This simplest is to change package OUILookup:

$OUILookup::oui_location = "oui.txt";

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When other code references this variable, simply refer to it with a fully qualified package name. However, global variables are usually a bad idea. You could use Exporter:

package Scrap::Foo;
use strict;
use Exporter;
use vars qw/ @ISA @EXPORT $foobar /;
@ISA = qw/Exporter/;
@EXPORT = qw( $foobar );

$foobar = 7;

sub doit {
    print $foobar;
}
1

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Then, in package main, I have the following:

use Scrap::Foo;
use strict;
$foobar = "Hello";
Scrap::Foo::doit;

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That will print "Hello" instead of 7.

My suggestion, though, would be to create a set_oui_lookup() sub in your module. That's the cleanest solution.

Cheers,
Ovid

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In reply to (Ovid) Re: Allowing user to change module variables by Ovid
in thread Allowing user to change module variables by mvaline

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