---
title: "MTPolylineLayerOptions.beforeId | Mobile sdk | Mobile sdk android | Android"
description: "beforeId"
---

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# MTPolylineLayerOptions.beforeId

val [beforeId](https://docs-qmgv.pages.dev/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.helpers/-m-t-polyline-layer-options/before-id/): [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html)? = null