Fill area under stacked area chart

Hi all,

I have a pbi report. The data source files are updated weekly. I am trying to create a stacked area chart with a fixed line, but now when one of the columns used in the legend changes, I do not have a fixed line on the chart, but a dot.

Right now I'm using 2 columns (from one table): Project Status, Date, Count of Project status.

Do you have any solution for that?

Output I want to achieve is below:

Thanks in advance!