How modify canvasjs.min.js

[jproduction]

Hi i need to modify canvasjs.min.js because when my splineArea chart surmount the value of y=80 then the colored area must change.
Can you help me please?

[Sanjoy]

Here are two workarounds which you might be looking for and these can be implemented without modifying the source code-
example 1
example 2

If you are looking for something else, could you please explain it a bit in detail. Also, please provide a pictorial representation so that it will help us to understand your requirement properly.

[jproduction]

Great support! The example2 is what i was searching!
Last support that i need is this: i need to find and indicate the intersection points between the curve and an orizzontal line.
Thanks

[Sanjoy]

Sorry,

Finding intersection point between spline curve and horizontal line is not possible.