static void openChestAndDropSlot(BlockPos pos, int slot,boolean dropstack){
        Minecraft.getMinecraft().thePlayer.sendQueue.addToSendQueue(new C08PacketPlayerBlockPlacement(pos,(double)pos.getY()+0.5D < Minecraft.getMinecraft().thePlayer.posY + 1.7D ? 1:0,Minecraft.getMinecraft().thePlayer.getCurrentEquippedItem(),0.0F,0.0F,0.0F));
        Minecraft.getMinecraft().thePlayer.swingItem();
        new Thread( new Runnable() {
            public void run()  {
                try  { Thread.sleep( 1000 ); }
                catch (InterruptedException ie)  {}
                ContainerChest containerchest = (ContainerChest) (ContainerChest) Minecraft.getMinecraft().thePlayer.openContainer;
                System.out.println(containerchest.getInventory());
                Minecraft.getMinecraft().playerController.windowClick(containerchest.windowId, slot, dropstack?1:0, 4, Minecraft.getMinecraft().thePlayer);
                Minecraft.getMinecraft().thePlayer.closeScreen();

            }
        } ).start();
}