First of all I am a newbie modder and my English is very bad but I started in this world of modding a week ago, and managed to make a furnace with gui, that the fuel is Netherrack. The problem I have is that in the furnace gui I can not move my inventory items to the slots of the oven. Do not let me catch them. I looked at the code minecraft normal oven and I think I have all the methods but something is wrong. some help: (