Welcome, Daniel Christev!

Hello Daniel,

I followed your tutorial on youtube: Grasshopper 13 - Creating a Parametric Spiral Staircase and I have a question: I want to design a real staircase and the important value for me is the height from the top of one step to the next, for example, 17 cm.

In the tutorial, the lower face of the first step starts on zero and the upper face is the thickness of the material for example, 5 cm.

how can I set the definition in a way that the lower face of the first step starts at 12 cm, +5 of thickness the upper face would be at 17?

I thank you in advance for your attention,

Hector