Dashboard pie chart widget

[RodrigoPetter]

I'm trying to use a statistic as a pie chart in my dashboard.

I created the statistic and set the option "Show as dashboard widget" as yes and "Result format" I selected only "graph-pie".

In my dashboard the only options that i have in the widget is "Multi Bar Chart", "Multi Line Chart" and "Stacked Area Chart". I'm I doing something wrong?

In the statistics screen, when I click to generate the statistic it generate the pie chart corectly.