use IPC::Lite qw(@urls);
push(@urls,'...');
##</code><code>##

require IPC::Lite;
IPC::Lite->import( Key => $0, qw( @urls ) );
push(@urls, '...');

Results in: 
Global Symbol "@urls" requires explicit package name (did you forget to declare "my @urls"?)

##</code><code>##

require UNIVERSAL::require;
my $module = "IPC::Lite";
$module->use( Key => $0, qw( @urls ) );
push(@urls,'...');

Results in: 
Global Symbol "@urls" requires explicit package name (did you forget to declare "my @urls"?)