Burn-up chart that show sub-statuses (child items)

What:

As a developer and product owner, I would like to track the work being done in a sprint to understand the likelihood of the work being completed by the end of the Sprint.

To be able to do so, the burn-up chart must show the sub-statuses, not only the top-statuses.

A product backlog consists of larger items, like Epics and Stories.

Stories are broken down to tasks that the developers works on in a Sprint.

Why:

Work item are often broken down into many child items and that is where the actual work is being done.

Tracking the main items in the burn-up chart is not so interesting as they will not be completed until the very end of the time period.

The interesting part is to track the "child" tasks.

Background info:

Hierarchy:

Kanban Board 1: Product Backlog: Epics broken into Stories. (for PO and Stakeholders)

Kanban Board 2: Sprint: Stories broken into tasks. (for developer team and PO)

The Epic, Stories and Tasks are linked by using the powerful synced copy feature.

Wish: Create a burn-down chart showing only what is taken into the Sprint, and showing progress of the sub-statuses.

This data is already present in most other calculations, charts and boards in Teamhood, but the most valuable presentation for a Scrum Team is the burn-up chart

The Custom Chart widget has the option to choose the particular statuses of interests, but unfortunately it does not have a burn-up or burn-down option. Just bar and donut.