title: xlsxwriter conditional formatting by formula criteria
body: <p>I want to apply format to cells in a column. The row indexes are 5,7,8,9,10,11 and 13.</p>
  
  <p>The code I am using is the following:</p>
  
  <pre><code> worksheet.conditional_format("C4:C14", {'type'    :  'formula',
                                             'criteria': '=ISNUMBER(MATCH(ROW(),{5,7,8,9,10,11,13},0))=TRUE',
                                             'format'  :   format_white})
  </code></pre>
  
  <p>The result is no Excel file is generated.</p>
  
  <p>The formula <code>=ISNUMBER(MATCH(ROW(),{5,7,8,9,10,11,13},0))=TRUE</code> works as I expected when I type it directly in Excel. I run the code above with a simpler formula <code>'criteria': '=MOD(ROW(),2)=0'</code> and it works, so I suspect the problem is in the criteria field.</p>
  
  <p>Can anyone help me? Thanks in advance</p>