---
id: world-set
name: World.set
category: world
kind: namespace-method
tokens: World.set
sig: World.set(prop_id, field_id, entity, value) -> void
tip: Write a component field by id.
order: 1
ns: World
member: set
---

Writes <code>value</code> into field <code>field_id</code> of component <code>prop_id</code> on <code>entity</code>. The reflective counterpart to <code>World.get</code>.