🚀 go-pugleaf

I would like to create a graphicLine.
I learned, how to modify the selected graphicLine through changing the entirePath parameter. Here are lines I was playing with:

myDoc = app.activeDocument;
myPage =app.activeWindow.activePage;
mySelection=app.selection[0];
myGraphicLine=mySelection;
myGraphicLine.paths[0].entirePath=[[[10,10],[20,30],[40,30]],[[100,80],[70,70],[120,90]]];

But I am stucked when I try to create a new graphicLine from scratch.

I started with:
myNewGraphicLine=myPage.graphicLines.add();

Now the question is how to add a path to that graphicLine objects?
I tried to create a path first, and then add it to the graphicLine but

myNewPath=myPage.paths.add();

does not work.

All I want are graphicLines composed of two pathPoint's, each pathPoint having the leftDirection, anchor and rightDirection.

Please help!

Miha