my $hr_CalendarItem = $response_xml->{'soap:Body'}->{'m:FindItemResponse'}->{'m:ResponseMessages'}->{'m:FindItemResponseMessage'}->{'m:RootFolder'}->{'t:Items'}->{'t:CalendarItem'};

##</code><code>##

my $subject = $hr_CalendarItem->{'t:Subject'};
my $value = $hr_CalendarItem->{'t:ExtendedProperty'}->{'t:Value'};