Comulative sum Within Categories

[Cocrodile]

Hi I have this table and I wish I could implement the cumulative function on dax.

------------------------------------------------------------------

-The CAT field is the field with reference to the category

-The WEEK field is the field referring to the week

-The Ticket field is the field with reference to the ticket number

-The CUMULATIVE field is the value I would like to get out in DAX and refers to the cumulative

-------------------------------------------------------------------------

-------------------------------------------------------------------

I would need a dax formula to calculate the cumulative.
In this case I only reported week 10 but it should calculate the cumulative sum for each week in relation to the category (CAT field).
Each week I have different categories
A thousand thanks

[amitchandak]

@Cocrodile , based on what I got

sumx(filter(allselected(Table), Table[Cat] = max(Table[Cat])  && Table[Week] <= max(Table[week]) ), [ticket])

[Cocrodile]

I have created the measure but testing it but it doesn't make the cumulative sum it brings me only the values