Try manipulating directly: itemstack.stackTagCompound.set...

@elix: That would be the same.

@HappyKiller101: Where the 'itemInteractionForEntity' get called?

That is an override of the item class one. It interacts with the player just fine but, the nbt tag seems to return null upon setting it for display.

Ah I was blind..

I think isRemote check is not needed here, you would better manipulate NBT on both side.

Let me try that... I feel like it would crash considering NBT is run on server side?

NBT works on both side, so it would not crash.

+ Your previous code should work, since itemstack got synced every tick.

    Does this print statement works?

System.out.println("ENTITY GOTTEN");

Yup! It get's the player and saves all the data no problem. But, when trying to access it for the information... nothing.

It's very strange behavior..

Can your item be stacked?

No it cannot. Nor can it be repaired, enchanted and has durability.

So, the NBT tag returns null on client side I'm guessing? Anyway to prevent this?

So it doesn't also contain the enchantment tag? It's impossible.

Are the enchantments of the item visible?

No no no. I don't want it to be enchant-able. It's not a tool just an item.

Try enchanting the item with Unbreaking. (Any damageable item would be able to have Unbreaking enchantment)

Does writing to nbt happens on both sides (it includes checking if method is called on both sides!)? Be sure to check that.

@Abastro Why? I'm pretty sure either you or I are not getting something here.

@elix What do you mean?

No, I'm sure that something is making NBT to null. So it is needed to confirm that and identify this symptom.

So, you want me to like add the enchantment in an anvil to the item and see if it stays?

So, when attempting to enchant it: it shows the glim on the item of it being enchanted but doesn't display it has Unbreaking 3 on the tooltip. What am I doing wrong?

So, I am guessing that maybe no nbt tag is set on the client side? I seem to only be setting the stack.stackTagCompound and it's strings to the server and not the client. Would there be a way to send a packet to update the clients nbt tag?

So, I am guessing that maybe no nbt tag is set on the client side? I seem to only be setting the stack.stackTagCompound and it's strings to the server and not the client. Would there be a way to send a packet to update the clients nbt tag?

@Abastro Why? I'm pretty sure either you or I are not getting something here.

@elix What do you mean?

I mean that maybe code is run only on one side... Wait, i'll try to repeat what you are doing and see what and where will go wrong...

I'm trying a method right now to update the client. Hopefully it works.