Sidechain using Izotope Neutron in Nuendo?

Hi.
How can I sidechain a third party plug in like Izotope Neutron in Nuendo?
As an example: I want the signal from track "A"to trig a plugin on track “B”…
I know how to use Nuendos native plugins, but is it possible to do it with other brands?

Micke S.