$VAR1 = {
          'version' => '2.0',
          'xmlns:media' => 'http://search.yahoo.com/mrss/',
          'fileSet' => {
                       'time' => '1499387013',
                       'fileName' => 'Atlanta_Regency.gif',
                       'emailAddress' => 'johndoe@gmail.com',
                       'requesterName' => 'John Doe',
                       'showAbbreviation' => {},
                       'zoneColor' => '0'
                     }
        };

##</code><code>##

my $showAbbreviation = $current->{'fileSet'}->{'showAbbreviation'};
 if ( not defined $showAbbreviation ) {
        $showAbbreviation = "";
    }

##</code><code>##

if (exists $current->{'fileSet'}->{'showAbbreviation'} ) {
	$showAbbreviation = $current->{'fileSet'}->{'showAbbreviation'};
	print "Yes: $showAbbreviation\n";
	} else {
	$showAbbreviation = "";
	print "No: $showAbbreviation\n";
	}