can you try to use method 
add_format(%properties)

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In reply to Re: UTF-8 issues with Perl in general and with Spreadsheet::WriteExcel by pysome
in thread UTF-8 issues with Perl in general and with Spreadsheet::WriteExcel by elef

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
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