Inverted affector falloff?

Hello everyone!
I am probably missing something obvious.
I am not able to invert a falloff anywhere in Notch.
let say I have a particles system where I want some turbulence.
I am able to set the turbulence within a radius around the affector, however i am not able to invert this behavior. How can I get the effect everywhere BUT within the radius?

I tried using procedural shapes to do so ( a cube with a smaller sphere inside set to substract ) … but it doesn’t seem to work properly.

I am probably missing something here :smiley:
any help?

thanks!

I would expect that procedural solution to work - do you mind posting an example here, or sending it to support@notch.one?

– Ryan