Maybe this simplified code can help you isolate your problem: 
use strict;
use warnings;
use Excel::Writer::XLSX;

my $file = (@ARGV) ? 'perl_bug.xlsx' : 'perl_good.xlsx';
my $book = Excel::Writer::XLSX->new($file);
my $worksheet = $book->add_worksheet();
$worksheet->write( 0, 0, 'Hi Excel!' );

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In reply to Re: variable scopes in Excel::Writer::XLSX by toolic
in thread variable scopes in Excel::Writer::XLSX by johnrcomeau

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