Update light levels?

So, I am using desht's light level update method:

Code:

public static void forceBlockLightLevel(World world, int x, int y, int z, int level) {
net.minecraft.server.v1_5_R3.World w = ((CraftWorld) world).getHandle();
w.b(EnumSkyBlock.BLOCK, x, y, z, level);
}

The only problem however is that the light level client side is only updated for that block. I tried using queueChunkForUpdate, but the problem is that the client doesn't update immediately. I also tried the chunk bulk packet, but it didn't seem to work. Is there any way to refresh the light levels, but without a delay?