How change color to gradient in "Oscillosope example"?

[Dexter90]

Hi,
I need to change green color to Range Gradient in this example:

http://doc.qt.io/qt-5/qtdatavisualization-qmloscilloscope-example.html

I tried some ways but there is no successful.
I want to present some value range in gradient color mode in real time.

How can I do this?

Thanks

[aha_1980]

@Dexter90

please don't cross post questions in several sub-forums!

also, the users here help in their spare time, so it may take a while before you get an answer.

regards