I have the below hash structure, hash of hash. I need to sort the inner hash referenced by test1, test2, test3, test4. The outer keys need not be changed. 
$VAR1 = { '191' => { 'test1' => { 'score' => '9.18' }, 'test2' => { 's
+core' => '2.84' }, 
                     'test3' => { 'score' => '15.62' }, 'test4' => { '
+score' => '11.84' }, 

          '190' => { 'test1'=> { 'score' => '13.28' }, 'test2' => { 's
+core' => '-47.56' }, 
                     'test3' => { 'score' => '18.50' }, 'test4' => { '
+score' => '14.88' } } }

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I am trying to sort the hash based on the 'score' value. The sorting should happen only among whats inside of the main keys '191' and '190' . See below hash structure for expected result. 
$VAR1 = { '191' => {'test3' => { 'score' => '15.62' }, 'test4' => { 's
+core' => '11.84' }
                    'test1' => { 'score' => '9.18' }, 'test2' => { 'sc
+ore' => '2.84' }, 
                     
        ​ '190' => { 'test3' => { 'score' => '18.50' }, 'test4' 
+=> { 'score' => '14.88' }
                    'test1'=> {'score' => '13.28' }, 'test2' => { 'sco
+re' => '-47.56' } } }

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Sorting is to be done based on descending score value. I have tried out the below code but it kind-of sorts based on the main-key. I need output as shown in the expected hash structure. 
my @sort_by_rank;
for my $key1 (keys %rankBased) {
    for my $key2 (keys %{$rankBased{$key1}}) {
        @sort_by_rank = sort{ $rankBased{$b}{$key2}{score} <=> $rankBa
+sed{$a}{$key2}{score}
                            } keys %rankBased;
    }   
}

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Here %rankBased is the hash. Please help.

In reply to Sorting perl hash by paul05

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