Attached is a screenshot of my falloff settings, and a questions as to why it is not working. I am trying to follow the blur case study and have come unstuck at the first step. The road is a loft object, changed to editable poly (or not and have the same result). I have ticket Density, edited the curve, tried include and exclude and as you can see from the screenshot there is no impact.
This is a real showstopper considering most of this tutorial is based around this working.
Any suggestions as to what I may have done incorrectly, I am on the latest version in 3ds max 2020.
Attached is a basic file with the spline and loft.. apply a forest preset to that, do anything with the density and nothing happens.