You didn't show where you called Dumper, and you didn't show what variable you are dumping. If you called it outside the while loop, you likely have a problem with variable scoping: 
use warnings;
#use strict;
use Data::Dumper;

while (<DATA>) {
    @off = split( /' '/, $_ );
    %find = ( "start" => $off[0], "stop" => $off[1] );
    my $hash_ref = \%find;
    my @official = [];
    push @official, $hash_ref;
    print Dumper(\@official);
}

__DATA__
1234 2345
1234 2345
3345 4456

[download]
prints... 
$VAR1 = [
          [],
          {
            'stop' => undef,
            'start' => '1234 2345
'
          }
        ];
$VAR1 = [
          [],
          {
            'stop' => undef,
            'start' => '1234 2345
'
          }
        ];
$VAR1 = [
          [],
          {
            'stop' => undef,
            'start' => '3345 4456
'
          }
        ];

[download]

In reply to Re: Array reference of hash references by toolic
in thread Array reference of hash references by PrincePerl

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