Draw line chart with combination of solid and dashed line

[Quezaquo]

I want to create a line chart with a combination of dotted and solid lines according to the x-axis area. For example after 10 points there will be a dotted line, otherwise a solid line.

Looking at the documentation, I came across this chart but strangely, the corresponding Sandbox code is not the right one.

Is this feature available or is it just a decoy?
Thank you 😃