title: Currency format is excelJS
body: <p>How do you format currency in exceljs? </p>
  
  <p>All I've found is this from their docs...which I have no clue how to type so I pasted it, but it doesn't seem to work</p>
  
  <pre><code>// Set Column 3 to Currency Format 
  ws.getColumn(3).numFmt = '�#,##0;[Red]-�#,##0';
  </code></pre>