Hi Undral, Thanks for your explanation! I'm Fayu Lai's colleague from the same company. I have two questions about this topic: 1. Do you have any plan to support Expressions for data-driven style of VectorTileLayer? 2. I followed your instructions and published a vector tiles using ArcGIS Pro 2.2: https://tiles.arcgis.com/tiles/LjXACVRBffrUtGL8/arcgis/rest/services/Conduit/VectorTileServer It has a Line layer called "ssGravityMain" which element color is based on "PipeLength" property. I noticed it has similar style settings as you suggested: "line-color":{"property":"PipeLength","default":"#000000","stops":[[-5,"#17F4F7"],[998.804,"#5719F4"],[2002.61,"#FF25F5"]]} in its default styles: https://tiles.arcgis.com/tiles/LjXACVRBffrUtGL8/arcgis/rest/services/Conduit/VectorTileServer/resources/styles/root.json Everything works fine if I show it using built-in map view of ArcGIS Online. But it doesn't work if I use ArcGIS API for JavaScript version 4.9. Here is a simple sample code: https://codepen.io/anon/pen/WaEOJy You can find "Bad buffer type 8" error message on Chrome console: That is exactly the same error when I used the Fayu's first snippet before. Thanks, Xing
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