That code isn't really building an array of hashes. @rec is an array, and $thisrecord is a reference to it. So you're really building an array of arrays, each array containing possibly a single item which is a hash ref?

You probably want something more like:

  my %rec = {LastName=>$result[1], FirstName=>$result[2], TimeIn=>$res
+ult[3], TimeOUT=>$result[4]};
  my $thisrecord = \%rec;
[download]

But, you could avoid those temporary variables altogether by just doing:

  push @{$ID{$result[0]}}, {LastName=>$result[1], FirstName=>$result[2
+], TimeIN=>$result[3], TimeOUT=>$result[4]};
[download]

use Disclaimer::Standard; # the code above is untested and may contain errors

Alan