Well, there is a limit of 754 controls (+ sections) on a report. Each
subreport would count as a control and if there was an attached label that
would count as a control. However, your sub-reports could be nested
inside subreports, so...
The practical limit might be speed of building/loading all this information,
plus the ability of the user to handle the amount of data displayed at one
time.
Thank you all! I found using Access to the build a chart dashboard is
quite awkward! I have a hard time to set the size of the charts to make
them fix in the limited space...