reference line of a line chart

Hi,
We can do the customization as per your requirements. Please contact our Sales team via Contact us -> Request a Quote form, We'll look into it.

Hi,
I just bought your extension and I wanted to do simple a line chart showing a % score of a user (test results). I also wanted to visually display that when user crossed let's say 50%, he/she passed the test.
I was thinking about having either a line at 50% as a representation of a pass rate or maybe the area from 50% to 100% could be green.
What would you suggest - how to do that?

thanks
Justyna