Display amount of Story Points in Backlog daily over time

Hi all,
I’m trying to create a bar chart, that has days on the X axis (let’s say the last 30 days) and on the Y axis the sum of Story Points of the items that are in the backlog.
For the backlog criteria I already have a calculated member that filters items with specific statuses like “ToDo” or “In Analysis”. This part is solved.
Also the X axis is solved - list the last x days, day per day.

My current problem is, which measure do I use to display the sum of Story Points on every specific day on the Y axis? “Story Points remaining” somehow doesn’t work, the numbers make no sense.

Can you please give me a hint how to approach this?
Thank you very much in advance!