hi guys, i would really appreciate if you could solve my problem, i am new to Crystal Reports, i need to do the following on an aspx page, i am using CR10.2

i need to add a target line on a bar chart, e.g.
 
I have (Y)years and (X)Examscores, I need to put a line (target line) on the Exam Scores.
 
 
   (X)Score|
               |
               | _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _   (this is the targtet line i need to have)
               |
               |
               |__________________________
                2001          2002           2003
 
 
now this target line should move up or down line on click on a button, so i need to add it to the bar chart programmatically after the chart loads.
 
I really need to get this done this week or else I would be in trouble.
 
I appreciate your help and time.
 
Thanks

The "free" way to do this is to create a formula that returns the value of your target line and then add it to the "Show Data" section in the chart expert so it gets plotted as a series of data. If its a bar or area chart, then the series will initially show up as bar/area, but you can then click on it and do "series options..." and force it to become a line.