Cannot remove items from Block Inventory via Button

[ReVollve]

Hey there! I am new to modding and got a problem with my mod! I am running forge:1.16.5-36.2.2

I created a button that (should) delete an item in a slot of a container.

That container belongs to a block. The block has a Container, a ContainerScreen and a TileEntity.

The slots work fine, i can put items in it and I can take Items out.

The problem is a function, that deletes an item in a slot. Everytime that function gets called, the item disappears.

When clicking the empty slot or closing and reopening the gui that item reappears

Here is some code i tested

public void destroyItem() {
        Slot slot = this.inventorySlots.get(0);
        ItemStack stack = slot.getStack();

        Soulstones.LOGGER.info("TE ITEM: " + te.getItems().get(0).getDisplayName());
        Soulstones.LOGGER.info("SLOT ITEM: " + slot.getStack().getDisplayName());

        slot.putStack(ItemStack.EMPTY);
        te.setInventorySlotContents(0, ItemStack.EMPTY);
        NonNullList<ItemStack> items = te.getItems();
        items.set(0, ItemStack.EMPTY);
        te.setItems(items);
        slot.onSlotChanged();
        detectAndSendChanges();

        Soulstones.LOGGER.info("TE ITEM: " + te.getItems().get(0).getDisplayName());
        Soulstones.LOGGER.info("SLOT ITEM: " + slot.getStack().getDisplayName());
    }

The slot with index 0 is the correct slot. te is the TileEntity bound to this container. The logger also says that the ItemStack is empty.

I hope anyone can help me with that.

[loordgek]

you need to tell the server that it needs to change the slot

[ReVollve]

Thank you, i currently have no idea how to do that but ill find a way!

[loordgek]

https://mcforge.readthedocs.io/en/latest/networking/

[ReVollve]

Thanks again