Future stars Assist for a hat trick with pisilli

Yes I am still trying to figure out what they mean! Does he only need to assist on the hat trick goal? Does he need three assists for goals in the game? Do they all need to be to the same player? There is no explanation and it's wasting my time trying to figure it out. So far I've had Pisilli assist for the hat trick goal and also have 3 assists for goals and its not giving me the task. But you said you've also tried him assisting for all 3 goals in a players hat trick and it doesn't count - SO WHAT DOES IT EVEN MEAN