Add enchantment glow to water bottle?

Is there a way to add the enchantment glow to water bottles (for custom potions)?
I've used this in a lot of my plugins, but it doesn't seem to work on water bottles:

Code:java

    public static ItemStack addGlow(ItemStack item) {
        net.minecraft.server.v1_7_R3.ItemStack nmsStack = CraftItemStack
                .asNMSCopy(item);
        NBTTagCompound tag = null;
        if (!nmsStack.hasTag()) {
            tag = new NBTTagCompound();
            nmsStack.setTag(tag);
        }
        if (tag == null)
            tag = nmsStack.getTag();
        NBTTagList ench = new NBTTagList();
        tag.set("ench", ench);
        nmsStack.setTag(tag);
        return CraftItemStack.asCraftMirror(nmsStack);
    }

I've also tried editing NBT data of actual custom potions (http://www.minecraftforum.net/forum.../381507-13w36b-1-7-custom-potions-format-give), but it just reverts to an awkward potion when I do.

 

Can't you give the ItemStack (the bukkit class) a enchantment.

 

LordPyrak try to use ProtocolLib and this example code:

https://gist.github.com/aadnk/4580551

 

This may apply.

Hope this helped,
- Minty