Summary Number Label - inserting field values

Godzilla

I would like the ability to insert field values in the summary label area. On Pie charts or any chart where you're showing a snapshot of data as of a given date(with no dates along x axis), I would like to show the as of date in the Summary label. Currently, on these charts i have to manually go edit the card to modify the date in the summary label. It would be helpful to make this field driven.