API Reference > imodeljs-frontend > Rendering > ParticleCollectionBuilderParams > pickableId pickableId pickableId: undefined | string If the particles are to be pickable, a unique identifier to associate with the resultant RenderGraphic. see IModelConnection.transientIdSequence to obtain an Id that is unique within an iModel. Defined in core/frontend/src/render/ParticleCollectionBuilder.ts Line 45 Last Updated: 11 June, 2024