BCC particle Illusion dissolve doesn't reveal layer

WIndows 10 PC
After Effects Host Latest Version
Continuum Latest Version

When I apply the particle illusion dissolve to a layer I select “Layer to reveal” - and then select the designated layer on the timeline that I would like to transition into; the problem is; all that occurs is that the layer to which the effect is applied simply fades to black, without revealing/showing the layer to transition into.

Do I need to place the layers in a specific location/order on the timeline to achieve the transition effect? There doesn’t appear to be any coherent instructionals on how to use transitions in After Effects while using Boris Fx, specifically, where to apply the effect, what layer etc and where to place things on the timeline. It would be nice if this existed.

Thanks for any help