How to use multidimensional hashes

Select or download this

$VAR1 = 'FILE_A';
$VAR2 = {
...
                                                         'C' => 1
                                                       }
                                   }

Select or download this

FILE_NAME    A    B    C    D
CHECK        2    3    2    1

Select or download this

FILE_NAME    A    B    C    D
CHECK        1    2    1    1

Select Code to Download