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$foo = { 'SOMETHING_01' => {'CLASS' => [ {'VALUE' => 'BUBBLE' } ] } }
$bar = $foo->{SOMETHING_01}; # $bar is hash reference $caz = %{$foo->{SOMETHING_01}; # $caz is a hash print $caz{'CLASS'}; # 'ARRAY(...)' - an array reference print $caz{'CLASS'}->[0]; # 'HASH(...)' - a hash reference