Line Chart Cumulative

[LloydWData]

Seeking a Cumlative Line chart based on Issue and Cease Date of Certifcation in my fact table. 
So i can show over date table hiareachy how many issued a cumlative figure on a line chart. 

Issue and Cease will contain Nulls 
Each row has a person ID and both Issue and Cease Date have relation to Date Table. 

I have tried reviewing posts and chatgbt its throughly stumped me 🤔
Ideally solution in DAX though can look at M solution if required. 

[Greg_Deckler · Accepted solution]

@LloydWData Generally that is something like:

Measure = 
  VAR __Date = MAX('Dates'[Date])
  VAR __Table = FILTER(ALL('Table'), [Date] <= __Date)
  VAR __Result = SUMX( __Table, [Value] )
RETURN
  __Result

If that doesn't help, 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.