title: how to get excel graphs to use the same custom date format as a cell mmm-yyyy
body: <p>I applied a custom date format to a column in excel (the format yyyy-mm e.g. 2014-01)</p>
  
  <p>But when I create a graph out of three columns of data (date-in above format |heading|value) the graph shows the date as 2014-01-31 2014-02-28.</p>
  
  <p>How do I get the graph to display the date as I have formatted it 2014-01 only without changing the data type to text and pasting values?</p>