Edit:Silly me, dragonchild is right and I should read what I write, not just copy & paste; corrected that character :-)

As far as I understand this on a first glance, you're printing an array, so thats normal behaviour you're showing (assuming I'm right on my assumptions on what values $key_hash, $key, $oid carry).

I guess you want to access element 1 in the nested array you're dereferencing with something like
@${$key_hash{$key}{$oid}[0]}[1] to get to the 1.

regards,
tomte

In reply to Re: Acessing an array element in a hash by Tomte
in thread Acessing an array element in a hash by Anonymous Monk

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