You grab a reference of the child actor > Get child Actor > Then cast to the child actor, as shown above. As you can see i was able to get that “NUM” int you were talking about and also Call it’s function to set the int. You could also use “Interface’s” Well I hope this helps.
Cool! And your English is just fine Well the example i gave you actually worked when i tested it as far as casting, I see that your casting as pure And pure ive found works when your only getting a reference to a variable that isnt going to be modified at runtime ect., If you use a regualr cast all should be well. Im using version 4.21 of the engine. I personally prefer using Interfaces whenever possible. Well if i can help you with anything dont hesitate to ask. Friend and Good Luck!