Are you using strict and warnings? I suspect that you may not be as you should be getting an error similar to below

Global symbol "%site" requires explicit package name at foo.pl line 10
+1.
Execution of foo.pl aborted due to compilation errors.

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Your array contains references to hashes so you need to dereference them to get at the contents. 

$site->{'Age'}

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Alternatively so you can use $site{'Age'}; you can do this. 

my %site = %{$recordset_TA_SITE[0]};

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In reply to Re: Assignment of hash to hash doesn't work? by rnewsham
in thread Assignment of hash to hash doesn't work? by ASadon

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