Hey!! a big thanx for responding Steve!!!
I tried that solution before but I had a problem with the gravity. The plane was always falling. Even if i was adjusting the gravity in the project setting/ dynamic parameter, i didn’t have the results i wanted.
Since i want to control the cracking with an effector, a bit like the exemple shown in the video I posted before, I used a target effector with a sphere as target object. Its not exactly the effect desired but it works not bad.
N.B.: I hope you understand well since english is not my first language.