Top N using Card visual

Hi lastnn30 - you cannot filter cards the same way you can tables and other visuals since they only return one value.

Try this measure:

Top Name = 
VAR varTopValue = MAX('Latest File'[Total])
VAR Result =
    MAXX(
        FILTER(
            'Latest File',
            'Latest File'[Total] = varTopValue
        ),
        'Latest File'[Name]
    )
RETURN
    Result

It gets the top value in that table, then gets the name of that person. MAXX() here is just converting the name to a scalar value, not returning the hightest name. the FILTER() function is returning a single record with Mark's data.