API Reference > imodeljs-backend > iModels > IModelDb > updateProjectExtents updateProjectExtents Method Update the project extents for this iModel. Example: ``` ts // This is an example of how to expand an iModel's project extents. const originalExtents = iModel.projectExtents; const newExtents = Range3d.create(originalExtents.low, originalExtents.high); newExtents.low.x -= 50; newExtents.low.y -= 25; newExtents.low.z -= 189; newExtents.high.x += 1087; newExtents.high.y += 19; newExtents.high.z += .001; iModel.updateProjectExtents(newExtents); ``` updateProjectExtents(newExtents: Range3d): void Parameter Type Description newExtents Range3d Returns - void Defined in core/backend/src/IModelDb.ts Line 669 Last Updated: 11 June, 2024