Hello again Nouhira,

On your sample of code you are not using _ (underscores) why on your sample of code you use?

Does this code compile?

On my LinuxOS test box your code gives me this error:

$ perl test.pl 
_public: Unknown Object Identifier (Sub-id not found: (top) -> _public
+)
[download]

Please test your code before posting.

Hope this helps, Thanos