title: To display variables of IReport in chart of IReport
body: <p>I have some FIELDS (IReport), which I get from database by SQL-Statements. 
  Then I do some calculations and save the results in VARIABLES of IReport.</p>
  
  <p>So, now I would like to display these variables in a chart.</p>
  
  <p>How can I do it? </p>
  
  <p>Thank you so much!</p>