in reply to How can one initialize the scalar $reg_no in hash element?

You are trying to read from a file opened for writing. You should close the file and open it for reading before trying to read from it.
لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ
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