title: How to change the tooltip text dynamically in cognos charts
body: <p>I have an issue in cognos chart , I have placed a data item in the chart series and name it criteria.</p>
  
  <p>The data item contains a case statement</p>
  
  <p>when (Metrics = 7) then ([Ace])   </p>
  
  <p>when (Metrics = 5) then ([Effort])   </p>
  
  <p>when (Metrics = 9) then ([Defect])    </p>
  
  <p>so when my parameter value is 7 the tooltip should show "Ace"  ,
  when its 5 the tooltip should show "effort"</p>
  
  <p>how to achieve this in cognos chart series?</p>