How do you make wood bars break when standing on them!

[Radical Batz]

This question might not make sense, but it does to me.

If you don't understand, I am trying to make the player when going on the wooden planks/bars it will break and you fall down in a hole. Is there a way to do it. It's similar to penumbra black plague, where you're in the vent and the floor is collapsed and if you walk on it, then it will break and you fall down.

How do I do that, can I do that or is there no such thing to make that? because I've seen people do it in there custom stories, but I forgot what the custom stories where called and I can't find a single way to do that, i can't find a code similar to that or anything. I'm lost help pls