It looks like you're trying to dereference twice (@{$Href}->{ (1,3) }). Try this instead: 

my @A = @{ $Href }{ 1, 3 };

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I asked a similar question a while ago. The responses in that thread may be of interest, especially if you have more complex data structures.

HTH

In reply to Re: Looking up an array of keys with a Hash reference by bobf
in thread Looking up an array of keys with a Hash reference by cems22

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