Thanks for the answer Suman. I must wait the upgrade of the tool in my client for use the note. About the first point:
It's possible create a chart that has a legend by year from a query, that only depends from exercise/period prompt?
I do the question, because i don't have idea to handle this with only a query prompt. I did some experiments and always need two query promts for handle the chart (period prompt and exercise/period promt). I need, show in the legend all the accumulated years to select/deselect of a project in the chart.
Some idea?
Thanks again for the help.