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Oracle JRE 8

NBT, I planned on making the mod opensource anyways. Ill do that the next days. This is my acc: https://github.com/cas-ual-ty

Correction, more than 4 years old

You need to call World#notifyBlockUpdate from the TileEntity whenever a value used by Block#getActualState changes. This tells the server to send the TileEntity's update packet to any nearby clients as well as telling them to re-draw the chunk containing the block, using the new actual state to select the model. You also need to call World#notifyBlockUpdate from TileEntity#onDataPacket so that the client re-draws the chunk whenever it receives the TileEntity's update packet. You can see an example of a block that uses TileEntity data in Block#getActualState here: BlockColoredRotatable, TileEntityColoredRotatable