can't calculate DATEDIFF using Max function

Hi darlingling520 ,

You could try this:-

datediff2 = 
var max_date = calculate(max(DATA[date]),ALL(DATA[date]))
return DATEDIFF(SELECTEDVALUE(DATA[date]),max_date,MONTH)

BR,

Samarth

okay I already figured out myself - in order to use the max function 

i need to use maxdate= calculate(max(data[date]),all(data)); so the max date will be fixed and therefore i can use it to calculate the datediff