It isn't currently possible to turn off those warnings from Excel::Writer::XLSX. I'll add it in a future version.

In the meantime, you can try avoid the warning by using write_number() for numbers or write() which tries to distinguish between strings and numbers and use the correct method.

--
John.

In reply to Re: Excel file format problem Generated by Excel::writer::xlsx moduls by jmcnamara
in thread Excel file format problem Generated by Excel::writer::xlsx moduls by sarf13

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