[1.12] [Solved] setMaxStackSize() not working

public class ItemUberTool extends Item implements IHasModel{

	public ItemUberTool(String name) {
		setUnlocalizedName(name);
		setRegistryName(name);
		setMaxStackSize(1);
		setCreativeTab(Main.UBERMINER);
		
		ItemInit.ITEMS.add(this);
	}
	@Override
	public void registerModels() {
		Main.proxy.registerItemRenderer(this, 0, "inventory");
	}


}

I'm using setMaxStackSize(1); but it's not working, it can get a full stack of this item.

Edited November 10, 20177 yr by Harystolho
[1.12]