Hello jsuresh,

Please reformat your post by removing paragraph tags from code and enclosing code in <code> ... </code> tags.

You should always have

use strict;
use warnings;
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at the head of your script. In this case, warnings would have told you that the lexical variable $workbook is declared twice. The second declaration:

my $workbook = Spreadsheet::WriteExcel->new("$FILENAME");
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overrides the first, so that module Excel::Writer::XLSX is never actually used.

Hope that helps,