@testHashKeys = keys %testHash;
@testHashValues = values %testHash;
$tmp = @testHashKeys;
foreach (@testHashKeys){
        print "deref bla = @$_ = $_\n";
}
foreach (@testHashValues){
        print "deref bla = @$_ = $_\n";
}
$ref = $testHash{$testHashKeys[0]};
@valueArray = @$ref;
print "valueArray = @valueArray\n";