Cumulative Sum in QlikSense Table object

[riyazasma1009]

Hi,

I have created a table in QlikSense as shown below:

Product	Sub Product	Day	Date	Sales
A	AA	Tuesday	17/9/2019	100
A	AB	Wednesday	30/9/2019	200
B	AA	Tuesday	17/9/2019	150
B	AB	Wedensday	30/9/2019	150

I wish to add a column in the table which would calculate the cumulative sum of sales for each product, sub product combination. The resulting table should be as shown below:

Product	Sub Product	Day	Date	Sales	**bleep** Sales
A	AA	Tuesday	17/9/2019	100	100
A	AB	Wednesday	30/9/2019	200	300
B	AA	Tuesday	17/9/2019	150	150
B	AB	Wedensday	30/9/2019	150	300

Can someone please help me with what expression needs to be written in **bleep** Sales column?

Thanks.