Cumulative Sum

[ali_hijazi]

Hello I'm working on a QlikSense dashboard
I'm trying to calculate the cumulative sum by Customer, and Invoice using the following expression:
=RangeSum(

Above(total Sum({<[Data Load],Category,Invoice,Customer>}[Quantity])*
Avg(1),0,aggr(RowNo(),Customer, Invoice))
)

I'm getting the desired result if there is no selection on Invoice, Date, and Category
what I'm trying to accomplish is as follows:
for the invoice that is 12301 the cumulative sum is 3272035 which is correct but when I select the invoice I get 3264618 which is the value of the invoice and not the cumulative sum
I added below the sample data script

Table:
LOAD * INLINE [
Data Load, Quantity, Category, Customer,Invoice
31/10/2018, 7417, apple,C1,12300
31/10/2018, 3264618, orange,C1,12301
31/10/2018, 7487132, pear,C2,45600
30/11/2018, 79892, apple,C1,12302
30/11/2018, 3329629, orange,C1,12303
30/11/2018, 7318647, pear,C2,45601
31/12/2018, 85071, apple,C1,12304
31/12/2018, 3382092, orange,C1,12305
31/12/2018, 7162199, pear,C2,45602
31/01/2019, 91648, apple,C1,12306
31/01/2019, 2515989, orange,C1,12307
31/01/2019, 7923292, pear,C2,45603
28/02/2019, 95574, apple,C1,12308
28/02/2019, 3459038, orange,C1,12309
28/02/2019, 6862316, pear,C2,45604
31/03/2019, 99109, apple,C1,12310
31/03/2019, 3499973, orange,C1,12311
31/03/2019, 6753454, pear,C2,45605
];