[Home](./index.md) > [server](./server.md) > [ChunkLattice](./server.chunklattice.md) > [setBlock](./server.chunklattice.setblock.md) ## ChunkLattice.setBlock() method Sets the block at a global coordinate by block type ID. Use for: incremental terrain edits. Do NOT use for: bulk terrain loading; use `ChunkLattice.initializeBlocks`. **Signature:** ```typescript setBlock(globalCoordinate: Vector3Like, blockTypeId: number, blockRotation?: BlockRotation): void; ``` ## Parameters

Parameter	Type	Description
globalCoordinate	[Vector3Like](./server.vector3like.md)	The global coordinate of the block to set.
blockTypeId	number	The block type ID to set. Use 0 to remove the block and replace with air.
blockRotation	[BlockRotation](./server.blockrotation.md)	_(Optional)_ The rotation of the block. \*\*Side effects:\*\* Emits `ChunkLatticeEvent.SET_BLOCK` and mutates block colliders. \*\*Category:\*\* Blocks

**Returns:** void ## Remarks \*\*Air:\*\* Use block type ID `0` to remove a block (set to air). \*\*Collider updates:\*\* For voxel block types, updates the existing collider. For trimesh block types, recreates the entire collider. \*\*Removes previous:\*\* If replacing an existing block, removes it from its collider first. If the previous block type has no remaining blocks, its collider is removed from simulation.