Graph with month dimension but reduce to multiple date fields

[cdecluseau_umanis]

Hello world,

I have to create a simple line chart like that.

My data look like this :

Customer	BeginDate	EndDate	speDate	Value
A	01/01/2022	05/02/2022	01/01/2022	High
A	06/02/2022	18/02/2022	01/01/2022	Low
B	14/12/2021	27/12/2021	-	Medium
B	28/12/2021	12/01/2022	29/12/2021	High
B	13/01/20121	18/02/2022	29/12/2021	Low
...

This table shows evolution of the customer over the time (begin to end date, then a new line with the following beginDate to end date...)

I've created a link calendar table to [BeginDate-EndDate]. So I can display for each month the number of distinct customer.
Here :
Dec.21 = 1 (B)
Jan.22 = 2 (A & B)
Feb.22 = 2 (A & B)

But a new kpi needs to be displayed :
Number of clients per month and with speDate in the month.

The result will be : 
Dec.21 = 1 (B)
Jan.22 = 1 (A)
Feb.22 = 0

As my month dimension is linked to [BeginDate-EndDate], I don't know how to tell that my month dimension needs also to reduce on another Date field.

If someone have an idea, i will really appreciate the help !

Thanks !

[SBDataspark]

Hi Cdecluseau_umanis,

Would you be able to provide a sample QVD with a smal set of dummy data and your line graph?
So that we can have a look at what you created and how to adjust this to your additional needs?

Kind regards,

Sebb