My code gives exactly the following. 
 perl tst.pl
$VAR1 = [
          [
            '11',
            '12',
            '13',
            '14',
            '15',
            '16',
            '17'
          ],
          [
            '21',
            '22',
            '23',
            '24',
            '25',
            '26',
            '27'
          ],
          [
            '31',
            '32',
            '33',
            '34',
            '35',
            '36',
            '37'
          ],
          [
            '41',
            '42',
            '43',
            '44',
            '45',
            '46',
            '47'
          ],
          [
            '51',
            '52',
            '53',
            '54',
            '55',
            '56',
            '57'
          ]
        ];
1st row, 3rd column: 13

[download]
You need to compare carefully the differences between what I wrote, and what you wrote.

Are you calling the function with three parameters?

In reply to Re^5: How to make this code more flexible by Sandy
in thread How to make this code more flexible by DanielM0412

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