Chart with running total

[tofuTnT]

Hi All,

I am trying to insert a chart into my report and ran into some problem. Here is the structure of my report

GH1 - Class

GF1 #running_total1, #running_total2

In the chart I want to have Class as X-axis and #running_total1 and #running_total2 on Y-axis. So I put Class field in "On Change Of" and put #running_total1 and #running_total2 in "Show values". I am supposed to have about 50 classes, but in the chart only 5 or 6 show up but with much larger value then they should be. Any idea how I can solve this?

Thanks in advance,

tofuTnT