gistfile1.txt

NSString *tileCacheDir = [NSString stringWithFormat:@"%@/%@",self.home.appCacheDir,cacheName];
[MaplyVectorTiles StartRemoteVectorTiles:tileURL cacheDir:tileCacheDir viewC:self.home.baseViewC block:
     ^(MaplyVectorTiles *vecTiles)
       {
           if (vecTiles)
           {
               MaplyQuadPagingLayer *layer = [[MaplyQuadPagingLayer alloc]
                                              initWithCoordSystem:[[MaplySphericalMercator alloc] initWebStandard]
                                              delegate:vecTiles];
               layer.numSimultaneousFetches = 8;
               [baseViewC addLayer:layer];
           } else
               NSLog(@"Failed to start vector tiles layer at: %@",vecOvl.url);
        }];

can you please share the url format you used in the above example.