Modify particle ID

[tyFlow]

Ah I see what the issue is. Yes, that's a difficult one. Even assigning shapes in order won't work here, because it's not guaranteed that the order the Collider operator will send particles to the next event will be the same order they were birthed in. Also it gets more complicated since the Shape operator has controls for frequency, and both operators have controls for splitting particle groups/elements which can make it so that the total number of possible shapes for each operator isn't the same, even if the input nodes are the same.

I'll have to think more about a solution....