Arranging Planes

Hello everybody,

I have a confusion.

I would like to create datum planes, which allows user to get two inputs; distance from reference datum plane & number of planes. For instance, user want to create 5 planes which have 200mm distance between each plane. I have done the distance part, but i cannot find the part of code that change the number of planes.

I use VB for coding.

Can somebody help me with this issue.