Is it possible to create different zones?

using UnityEngine;

namespace InfinityCode.OnlineMapsSupport
{
    public class OtherStyleInArea : MonoBehaviour
    {
        public double leftLongitude = -10;
        public double rightLongitude = 10;
        public double topLatitude = 10;
        public double bottomLatitude = -10;
        public string otherStyle = "osm.mapnik";

        private OnlineMapsProvider.MapType mapType;

        private void Start()
        {
            mapType = OnlineMapsProvider.FindMapType(otherStyle);
            if (mapType != null)
            {
                OnlineMapsTileManager.OnPrepareDownloadTile += OnPrepareDownloadTile;
            }
        }

        private void OnPrepareDownloadTile(OnlineMapsTile tile)
        {
            OnlineMapsVector2d tl = tile.topLeft;
            OnlineMapsVector2d br = tile.bottomRight;

            if (tl.x < leftLongitude && br.x < leftLongitude ||
                tl.x > rightLongitude && br.x > rightLongitude ||
                tl.y < bottomLatitude && br.y < bottomLatitude ||
                tl.y > topLatitude && br.y > topLatitude) return;

            (tile as OnlineMapsRasterTile).mapType = mapType;
        }
    }
}