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  1. or download this
    use strict;
    use warnings;
    ...
    $users->{ilsa}->{count}=5;
    
    print $_ . "\n" for sort { $users->{$a}->{count} <=> $users->{$b}->{co
    +unt} } keys %$users;
    
  2. or download this
    use strict;
    use warnings;
    ...
    $users{ilsa}->{count}=5;
    
    print $_ . "\n" for sort { $users{$a}->{count} <=> $users{$b}->{count}
    + } keys %users;