title: Excel chart changing all data labels from value to series name simultaneously
body: <p>I am having this problem in excel stacked column chart while trying to change the labels. My graph has multiple columns and hundreds of stacked values (series) in each column.</p>
  
  <p>By selecting chart then from layout->data labels->more data labels options ->label options ->label contains-> (select)series name, I can only get one series name replacing its respective label values. For more than hundred series stacked in columns i want them all to be changed at once, is there any way out? why it does not change them all at once?</p>