Solved setDamage(0) not working

Hello,
This piece of code isn't working:

PHP:

$sender->getInventory()->getItemInHand()->setDamage(0);
            $sender->sendMessage("Item damage was set to 0 (tool fixed)";

It doesn't set the sender's hand item damage to 0...
What am I doing wrong?

 

Try this:

Code:

$sender->getInventory()->setItemInHand($sender->getInventory()->getItemInHand()->setDamage(0));
$sender->sendMessage("Item damage was set to 0 (tool fixed)";

 

Argument 1 passed to pocketmine\inventory\PlayerInventory::setItemInHand() must be an instance of pocketmine\item\Item, null given, called in etc/etc.

 

PHP:

$item = $sender->getInventory()->getItemInHand();
$item->setDamage(0);
$sender->getInventory()->setItemInHand($item);
$sender->sendMessage("Item damage was set to 0 (tool fixed)";

 

When modifying damage values you may need to resend the inventory contents to the player for the changes to become visible. $player->getInventory()->sendContents($player);

 

Thank you , it worked
@ImagicalGamer thanks for the explanation

In brief words
@MCPEPIG thank for the code
@ImagicalGamer thank for the explanation