I figured a way to implement the functionality of the ‘split amount’ PFlow operator in TP, and quite easily:

A transcription – like Bobo does, explaining his scripts, I find that very useful: A random value between 0 and 1 is created for each paricle in the old group, using the ‘per animation’ option in the random operator. Then, this value is piped to a threshold operator (‘inside’ enabled) which has the split ratio defined in it. If it is 0-0.5 for example, it will split 50% of the particles, etc. The output of the threshold is sent to a group operator, which sends the particles to the new group. Save a blackbox, drink a beer 😉