levels and curves

[Dogod]

Hello everyone:


I would like to know something. We know that there is a difference between creating a topographic surface points, or import a file with contours.

When you create points, I can create multiple levels in Revit and tie each of these nivees my point curve, but

When I import a file with Autocad level curves, how to put in as Revit levels further if the file brings many curves? (For example, with differences of ten centimeters).


thanks