UE4 C++ Generated hit event

　　When you add a skeletal mesh component using c ++, can not always hit the trigger event, after some agonizing, found to be generated hit event did not open

　　Set the properties inside the construct are fundamentally useless, and finally moved to begin play set inside job

　　ue4 was generated hit event is by SetNotifyRigidBodyCollision set of pit father

　　mFlightMesh->SetNotifyRigidBodyCollision(true);
　　mFlightMesh->BodyInstance.SetInstanceNotifyRBCollision(true);
　　mFlightMesh->OnComponentCollisionSettingsChanged();

　　Do not less OnComponentCollisionSettingsChanged, otherwise useless