Get the cumulatieve value before the selected month WIP

[BobKoenen]

Hi all,

I am trying to create a Work in Proces overview which shows the total amount to be invoiced. This overview has a from till slicer on month level. The first column always needs to show the cumulative values of all months before the first month selected in the slicer.

See a simpel model for example from month 2 til month 4:

		Selected months
	Start Wip	Worked hours	Written off	Invoiced	End Wip
Project A	100	500	200	200	200
Project B	-50	100	0	0	50
Project C	200	0	100	100	0

If I would change the Slicer to from month 5 til month x The value of the [Start WIP] would be the [end Wip] in the table above. 

The end Wip = (begin WIP+worked hours) - (written off + Invoiced)
I am struggeling to get the formula for the [Start Wip], This is essentially the cumulative [end Wip] of the month before the selected month. 

However I think I am getting into a Loop and I cannot figure out how to het the total from the selected month -1. 

Hope you can help me

[Stachu]

Can you add sample tables (in format that can be copied to PowerBI) from your model with anonymised data? Like this (just copy and paste into the post window).

Column1	Column2
A	1
B	2.5

I mean the input tables, as I assume the one you posted is your expected output, correct?

[BobKoenen · Accepted solution]

Hi stachu,

Thankx for you reply. It took a while for anybody to respond so i have figured it out myself. I used this formula 

OHW Begin periode =

var mindate = CALCULATE(FIRSTDATE('Calendar'[Date]);ALL('Calendar'[Date]))

return

CALCULATE( [OHW eind -1];

FILTER(ALL('Calendar');'Calendar'[Date] < mindate))


this always gets me the cumulative totals of the months before the selected months. Regardles if I select multiple months. 

[Stachu]

glad to hear you solved it yourself 🙂
can you mark your post as solved, so it can help others in the future?