Data vizualisation about leadtime accumulate

[bouzp2019re]

Hi everyone, 

I started to use Qlik recently so i am still new at this 🙂 I am trying to do a curve about lead time. Indeed my table is like this :

Lead Time (in days)        Number of reservation  

390                                                            5

389                                                             1

388                                                             3

.......

1                                                                  52

In my curve i would like to represent the number of reservation by lead time but in addition. For exemple in my curve

for 388 days i would like to have 9 reservations ( 5+1+3). The result would look like that : 

Do you have any idea ?

Thanks a lot 

[Anil_Babu_Samineni]

IF you ask me, I would simply logic manual like

If([Lead Time (in days)]='388', Sum({<[Lead Time (in days)]={390, 389, 388}>} [Number of reservation]), Sum([Number of reservation]))

Question: Why only 388 and not 389, 390 ..

[bouzp2019re]

Thanks for your answer 🙂 Maybe i did not explain well. 

In my table i have like 390 observations. The column LeadTim has all day from 1 to 390. And each time i want to cumulate.

Thanks