G'day sogo87,

Welcome to the monastery.

Spreadsheet::XLSX is for reading only.

Excel::Writer::XLSX is for writing; however, it can only write to newly created files. The fourth line of the DESCRIPTION says:

"This module cannot, as yet, be used to write to an existing Excel XLSX file."

So, what you'll probably need to do is read the existing file, create a new file, then write the original data along with any modifications or additions. The basic code would look something like: 

for my $read_sheet ...
    for my $row ...
        for my $col ...
            my $cell = $read_sheet->{Cells}[$row][$col];
            $write_sheet->write($row, $col, $cell->{Val});
        ...
    ...
...

[download]

-- Ken

In reply to Re: Modifying xlsx file with perl by kcott
in thread Modifying xlsx file with perl by sogo87

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