Ok now i'm working on an ITEM Inventory, not a block ! package com.kporal.lau.items; import com.kporal.lau.Ref; import net.minecraft.creativetab.CreativeTabs; import net.minecraft.entity.EntityLivingBase; import net.minecraft.entity.player.EntityPlayer; import net.minecraft.item.Item; import net.minecraft.item.ItemStack; import net.minecraft.nbt.NBTBase; import net.minecraft.nbt.NBTTagCompound; import net.minecraft.util.ActionResult; import net.minecraft.util.EnumActionResult; import net.m