Freeze half of the player model

Hi people, I’m experimenting with JetBoom Lua Animations API for a SWEP I’m working on, and I noticed that it works by applying an offset to the bones, not using absolute rotations. The thing is that if I make a LUA animation for a standing activity, it won’t work well if the player is, for example, running, because the arms move, and therefore the bone offsets are not the same. I want to know if theres a way to “freeze” parts of a player model, while others keep playing animations. Basicly I want the upper part of the body to stop doing animations (like standing in T pose), while the legs keep running animations as usual. Is that possible?

Nevermind, I just noticed that most weapons animations don’t move the arms when running, I could use one of them.