Product between rows and sum group by one or more categories

[lhdp]

My need is simple : I have different lines which I want to multiply and I need a global KPI summed by month.

I created a measure : Amount = PRODUCTX(Feuil1,Feuil1[Value])

But of course I'm not specifying how to add that amount up and by default Power BI does a grand total with each row multiplied.

I need some help. Thanks in advance. 

[lhdp]

Thanks to you. The 2 solutions run wells. It depend if we want to specify the product or not between variables. 

[amitchandak · Accepted solution]

@lhdp , Try measures like

sumx(values(Feuil1[Month]), calculate(PRODUCTX(Feuil1,Feuil1[Value])))

or

sumx(values(Table[Month]), calculate(sumX(filter(Table, [Variable] ="Qty"), [Value]) * Maxx(filter(Table, [Variable] ="UnitPrice"), [Value])))