Seriously, wow! This is an awesome tool!
So I started by taking a cube and setting to the right size. I decided to go with 0.1 for the radius, and then fit it to within my railing. Next I cut the cube up to make a wedge.
Then, the tool basically did everything. Using relative offset to set it 1 back and 1 up, I then just increased the array until I was at the top of the ramp.
One join later and I have my stairs.
