use Data::Dumper;

use strict;
use XML::Twig;

my $xml_twig = XML::Twig->new(
        pretty_print => 'indented',
        NoLWP => 1,
        discard_spaces => 1,
);

$xml_twig->parse ( \*DATA ) || die "\nError parsing data $@\n";

my $struct=$xml_twig->simplify( noattr => 1 );

print Dumper($struct);


__DATA__
<myconfig_data name="aaa" >
        <level1 my_att="somestring">
                <value>hello1</value>
        </level1>
        <level2>
                <value other_att="bbb">hello2</value>
        </level2>
        <level3>
                <value>hello3</value>
        </level3>
</myconfig_data>