OK
..I cannot have a summary field in my report...so I'm gonna use the Advanced chart, but I don't get the result I want
In the group footer section of my report, there is a field that I'd like to have in my chart. This field is getting its value from a shared variable and each time I want to create my chart, there is no value in it
If I create a chart for each group, then I have the good value in the chart, but I cannot have only one chart at the end...