Accumulated value with time filter

[Robin96]

Hey all, i have been trying out a few different measures for creating a running total measure and filtering it by date. but i know seek help from some proffesionals. 

i have a matrix visual that displays numbers by week. i also have a filter that makes the user select the week between date.

what i want, is to show accumulated values all the way to the earliest week the user selected, and after that it should start over and accumulated from the week after the first selected week.

i have posted a screenshot for better understanding

[Greg_Deckler]

@Robin96 So, do you have a separate table for the weeks the user selects in like a slicer or something?

Sorry, having trouble following, can you post sample data as text and expected output?
Not really enough information to go on, please first check if your issue is a common issue listed here: https://community.powerbi.com/t5/Community-Blog/Before-You-Post-Read-This/ba-p/1116882

Also, please see this post regarding How to Get Your Question Answered Quickly: https://community.powerbi.com/t5/Community-Blog/How-to-Get-Your-Question-Answered-Quickly/ba-p/38490

The most important parts are:
1. Sample data as text, use the table tool in the editing bar
2. Expected output from sample data
3. Explanation in words of how to get from 1. to 2.