Turning on your floodlight from another Ring device

I’ve just purchase a floodlight cam which is great and I was planning on putting some stick up cameras around my house (not spot light version) where the sensor doesn’t quite sense far enough but the light would be sufficient.

I’ve set up a home system using IFTTT that turns internal lights on when the floodlight senses movement but for some reason Ring has not enabled the floodlight to be turned on by an automation.

Does anyone know how I can get the Floodlight light to turn on when an external stick up cam (battery) senses movement?