Neighbor search loop

[ldotchopz]

Going from the example scene "neighbor virus" I have been trying make the virus die over time and then grow from different places. I really struggle to understand when the Properties Test Operator is looking for a Particle Group that is further along in the chain of events, it doesn't make logical sense to me.

I am trying to send the virus particles back to the first event, to make a continuous growth pattern spreading everything. I have particles spawning to trigger the growth but once the virus has spread it won't send them back without it doing something weird. I'd really like to get a grip on particle groups.

My attemp is attached,

Thanks!