Invert
What is it about?
This page describes the Invert modifier layer in Cinema 4D's Field system. It flips Field values — 0 becomes 1 and vice versa — reversing falloffs without rebuilding the underlying Fields.
This modifier lyer reverses the effect: 0 becomes 1, 1 becomes 0 and other values accordingly.
Example
A spherical field with a linear falloff in value is animated inverted.