Update widget with SelectAction

I have a bunch of widgets on the dashboard. They are stats widgets (and don't have a table underneath). I would like to have a dropdown where I can select a user and it'll filter down the numbers in the widgets based on who owns the item.

Currently I have a

SelectAction

SelectAction

(so that I can get it into the headerActions) and the widget looks at the (initial) value of the selectAction.

However, it's not live() as selectAction doesn't have that method. Is there a way around this? Is there a better way to do this?

TIA