Making sense of roblox debug.setstack in your scripts

If you've been digging through the Luau documentation or hanging around advanced scripting forums lately, you've probably run into roblox debug.setstack and wondered what the heck it actually does. It's one of those functions that sounds incredibly intimidating at first, mostly because it deals with the "stack"—a concept that usually stays hidden under the hood while you're busy making parts move or creating UI. But once you pull back the curtain, it's a pretty fascinating tool, even if it's one that most developers won't use in their day-to-day work. ...

February 8, 2026 · 6 min · Kundler Gabi