title: Data shows only as zeros on chart
body: <p>I have an excel sheet with data in it:
  <img src="https://i.stack.imgur.com/Haq5i.png" alt="enter image description here"></p>
  
  <p>That drives a chart, but the chart only shows 0 as data:
  <img src="https://i.stack.imgur.com/QVRYj.png" alt="enter image description here"></p>
  
  <p>Each of my cell is a formula. </p>
  
  <p>I tried to write a value in a cell and it shows in the chart</p>
  
  <p>I tried to copy the data and paste values, but it doesn't show on the chart.</p>
  
  <p>Please help.</p>