The question was here for a long time with bounty and no satisfying solution for me. I erased the first post and am posting instead a question that can be answered quickly with a yes or no so I can proceed with my doings.
If you could answer it really fast before it's deleted by "not a good question". Is using a custom shape from PhysicsEditor to Nape the same as doing it with Box2D? (ofc changing syntax)
If you could then give a look in that link then say it's the same process in Nape that'll be enought thanks.
I ask this because I found the Box2D tutorial easier to follow so far.
public var floor:Body;
floor = new Body(BodyType.STATIC);
var floorShape:PhysicsData = new PhysicsData();
floor.shapes.add(floorShape); // Error: Implicit coercion of a value of type PhysicsData to an unrelated type nape.shape:Shape.
floor.space = space;