Use of constant inside a module?

[howa]

Config.pl
================================================
use strict;

use constant TEST_CONST => "9999";

1;

Test1.pm
================================================
use strict;

BEGIN {

require "Config.pl";
}

package Test1;

sub sayHello {

print TEST_CONST;
}

1;


Test.pl
================================================
use strict;

use Test1;

Test1::sayHello();

# print TEST_CONST;




How to print out the constant as defined in Config.pl inside Test1.pm?

Thanks.