MAX - Month - year - sales

[Cemep]

hello 

I need to calculate the maximum sales value based on a month

sum({<[año]= {$(= Max([2018]))},[mes]={$(=Max(NUM(0,12)))}>}[IVTOTAL NETO])  no work 

[Arthur_Fong]

Try:

sum({<[año]= {$(= Max([2018]))},[mes]={$(=Max([Month Dimension])},[Month Dimension]=>}[IVTOTAL NETO])  

[Vegar]

You would need to aggregate per month and use min/max on the aggregated values. 

MAX(AGGR( <Your  expression >, YearMonthField))