Great! The following change then solves the problem: 
        my @req = map \$_, @currentpath, $list[1], 'required';

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لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

In reply to Re^3: Parsing a dataset into an arbitrary sized hash of hashes by choroba
in thread Parsing a dataset into an arbitrary sized hash of hashes by DunLidjun

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