Build a string from a filter selection

Hi Anonymous,

Create slicer table as:

Slicer = 
VALUES('Table'[Month Num])

Create column as:

Column = 
CALCULATE(
    MAX('Table'[Month Num]),
    FILTER(
        'Table',
        'Table'[Month Short]=EARLIER('Table'[Month Short])-1
        )
    )

Create measure as:

Measure = 
var _month=
CALCULATE(
    MAX('Table'[Column]),
    FILTER(
        'Table',
        'Table'[Month Num]=ALLSELECTED(Slicer[Month Num])
    )
)
return
CONCATENATE(_month,"FCST")

Here is the output:

The demo is attached, please try it.

If you still have some question, please don't hesitate to let me known.‌‌

Best Regards,

Link

Is that the answer you're looking for? If this post helps, then please consider Accept it as the solution. Really appreciate!