panelComp Scrollbar data

If i have a panelCOMP A where “Drag to Reposition” is set to component i can drag to change the position of the comp.
If that comp is in another panelCOMP B where Children > Horizontal/Vertical Scrollbar is set to “Automatic” when i drag A outside of B some scrollbar will show up and allow me to navigate B.
How can i get any data from these scrollbars (how much they are scroll, their range, …) or which part of B is really displayed?

scroll.1.toe (3.5 KB)