Without bothering with the GUI framework, here's a possible general approach to handling the VALUEs file:

c:\@Work\Perl\monks>perl
use strict;
use warnings;

use autodie;

use Data::Dump qw(dd);

my @tags = qw(NAME TASK CAPS PKG_TYPE STACK SHIP);

my $rx_value_intro = qr{ \s* [|] \s* VALUE \s+ = \s+ }xms;
my $rx_value       = qr{ [[:alnum:]]+ }xms;

my ($rx_tag) =
    map  qr{ \b (?: $_) \b }xms,
    join ' | ',
    map  quotemeta,
    reverse sort
    @tags
    ;
print "rx_tag $rx_tag \n";  # for debug

my $data_file = <<'EOF';
NAME|VALUE = a
TASK|VALUE = copy
CAPS|VALUE = 0
PKG_TYPE|VALUE = premium

NAME|VALUE = z
TASK|VALUE = cut
CAPS|VALUE = 0
PKG_TYPE|VALUE = premium

NAME|VALUE = c
TASK|VALUE = paste
STACK|VALUE = 2
SHIP|VALUE = lowtier
EOF

open my $fh_input, '<', \$data_file;

local $/ = '';

while (my $record = <$fh_input>) {

    my $got_params =
    my %params =
    $record =~ m{
        \G \s*
        ($rx_tag) $rx_value_intro  ($rx_value) \s+
        }xmsg;

    die "bad params record '$record'" unless $got_params;

    # dd \%params;  # for debug

    process_params(%params);

    }

sub process_params {

    my (%params,
        ) = @_;

    print "processing params: @{[ %params ]} \n";

    }

__END__
rx_tag (?msx-i: \b (?: TASK | STACK | SHIP | PKG_TYPE | NAME | CAPS) \
+b )
processing params: NAME a PKG_TYPE premium TASK copy CAPS 0
processing params: NAME z PKG_TYPE premium TASK cut CAPS 0
processing params: STACK 2 NAME c SHIP lowtier TASK paste
[download]

See haukex's article Building Regex Alternations Dynamically. Of course, much testing of the code is needed.

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