How to use filter with multiple values in DAX?

Hey,

my current favorite to check if one value is contained in a set of values is using the newer IN() operator

So you can write it like this

COUNTX(
  'Yourtable'
  ,'Yourtable'[YourColumn] IN ("WAI", "VER", "APP","HEL", "SCH")
) 

Edited 2017-11-09 (start):

The statement above will not work due a type, the correct statement uses curly braces, why is explained in my last post. The correct statement will look like

COUNTX(
  'Yourtable'
  ,'Yourtable'[YourColumn] IN {"WAI", "VER", "APP","HEL", "SCH"}
)

Edited 2017-11-09 (end):

Assuming that the STATUS comes from a slicer, this would also be possible

COUNTX(
  'Yourtable'
  ,'Yourtable'[Yourcolumn] IN (ALLSELECTED('MaybeAnotherTable'[ColumnUsedInSlicer]))
)

Maybe this idea helps you give another idea