how to make a chart drill down?

[americvish]

i have a chart place in the group header, which is showing some values and on change of datetime field.
the datetime field in group by the parameter interval like monthly,weekly,daily,hourly.

if the parameter is monthly, the chart shows monthly data. i want to make the chart drill down so that the user can see weekly,daily, hourly data by clicking on the chart i.e drilling it down.

I want to know how to make the chart to be drill down.