Railclone - Basic Windows Conditional

I am doing a three part series on building parametric windows using Railclone. This is the first installment which is starting off basic and is a slight adjustment of itoo's parameterising windows tutorial. You should watch this first as it explains how the Arithmetic/Selector node works. I will provide the expression anyway below if you don't require a thorough understanding.

Itoosoft Parameterise Windows Tutorial:
https://www.itoosoft.com/tutorials/parameterise-windows

We will be using a Conditional node to separate the window profile on the left of the frame to the right side as the example below:



Click here or on the above image to go straight to the tutorial