PowerBi count up CalenderWeek when Value in equals zero

[Lukas21]

Hello,

we have a PowerBi report in which the future stock per material per calendar week is forecasted. Now we want to add a value to this report and if the value 0 is forecast in a calendar week, we want to calculate +1 for each previous calendar week. So that the calendar week 2 weeks before 0 has the value 2 and so on.
You can see in the picture that in line 3 on 28.08 the stock goes to 0. Now in the new measure there should be a 1 in the week of 21.08. and a 2 in the week of 14.08....

Thanks for every help

[amitchandak]

@Lukas21 , refer if these approach can help

Inventory Days
https://radacad.com/calculating-stock-on-hand-using-dax-power-bi-inventory-model
https://blog.enterprisedna.co/calculate-days-of-zero-stock-power-bi-inventory-management-insights/

If this does not help
Can you share sample data and sample output in table format? Or a sample pbix after removing sensitive data.