[Solved] Can't generate chests with items, plz help me

SOLVED
So I was trying to generate chests with items filled, and it generated chests but there's no item in it, please help me!! thanks.
here's my code:

PHP:

$level->setBlock($pos, new Chest(), true);
        $nbt = new CompoundTag("", [
            new ListTag("Items", []),
            new StringTag("id", Tile::CHEST),
            new IntTag("x", $x),
            new IntTag("y", $y),
            new IntTag("z", $z)
        ]);

        if($level->getChunk($x, $z) == null) {
            $level->loadChunk($x, $z);
        }
        $chunk = $level->getChunk($x, $z);
   
        $tile = new \pocketmine\tile\Chest($chunk, $nbt);


        if($tile instanceof \pocketmine\tile\Chest) {

            foreach ($item_drop as $index => $value) {
                $item = explode(':', $value);
                $tile->getInventory()->setItem($index, Item::get($item[0], $item[1], $item[2]));
            }

        }

 

Is the array $item_drop empty? Use var_dump() to check it.

 

May we know what is the value of $item_drop?

 

No, it's not empty.
$item_drop = array('17:0:5', '3:0:1');

 

Thank you, I've changed the title.

 

Yes, it's been set to like array('17:0:5', '3:0:1')

 

PHP:

$level->setBlock($pos, new Chest(), true);
        $nbt = new CompoundTag("", [
            new ListTag("Items", []),
            new StringTag("id", Tile::CHEST),
            new IntTag("x", $x),
            new IntTag("y", $y),
            new IntTag("z", $z)
        ]);

        if($level->getChunk($x >> 4, $z >> 4) == null) {
            $level->loadChunk($x >> 4, $z >> 4);
        }
        $chunk = $level->getChunk($x >> 4, $z >> 4);
  
        $tile = new \pocketmine\tile\Chest($chunk, $nbt);


        if($tile instanceof \pocketmine\tile\Chest) {

            foreach ($item_drop as $index => $value) {
                $item = explode(':', $value);
                $tile->getInventory()->setItem($index, Item::get($item[0], $item[1], $item[2]));
            }

        }

I think you need to shift the bits of $x and $z to the right 4 times. Why? "Because chunks are 16*16 groups of X/Z-coordinates." (PeMapModder, online).

 

It works!! Thank you so much!!

 

No problem. Please add "[Solved]" to te beginning of the title.