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

# MTPolylineLayerOptions.beforeId

val [beforeId](https://docs.maptiler.com/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