#!/usr/bin/env perl

use 5.014;
use strict;
use warnings;

my $re; BEGIN { $re = qr{(?msx: name="([^"]+)" .*? value="([^"]*)" )} }

{
    local $/ = '/>';

    while (<DATA>) {
        next unless /$re/;
        say 'name=[', $1, ']; value=[', $2 =~ y/ \n/ /rs, ']';
    }
}

__DATA__
<property name="Own"        value=""/>
<property name="Type"        value="Record"/>
<property name="Text"        value="Sample text

more sample text
more more same text]."/>
<property name="Unique"         value="yes"/>

##</code><code>##

name=[Own]; value=[]
name=[Type]; value=[Record]
name=[Text]; value=[Sample text more sample text more more same text].]
name=[Unique]; value=[yes]