Add count of values in a slicer visual

I don't think this feature is doable with PowerBI's existing slicer. The reason that the values won't change is that calculated columns and tables only change when the report is refreshed. But at the same time, we can't use measures in slicers. 

As a work around, you could try use a table / matrix with the status and measure for countOccurences, and turning on visual interactions for cross-filtering.