Vehicle Crash: How to only use initial/first hit?(OnHit Event)

Ty for answering, this one helps ! But its not the solution… if 2 cars would crash into another car at the same time this one wouldnt work properly… i would need a “DoOnce” for every other vehicle? and how can i tell him when to reset the the “DoOnce” node without a delay? i want to be able to hit another car multiple times after iam not touching it anymore…