Create an Array for Types alligned to a 3D spline or line

Hi! I´m quite new in Dynamo and I need to place Family Types in a 3D array. I defined the distance between the Types with a parameter contained in the Family, and managed to do it in 2D, but for 3D i have no idea.

Thank you!

Select a 3D line instead of a 2D one. Place families by the generated points. Just be sure yoor families are correctly built to host to 3D space.