Use PHP: public function inventoryClean($cmd, $params, $issuer, $alias, $args, $issuer) { $username = $params[0]; if($username === '' && $username === null) return "use /inventory clean "; $player = $this->api->player->get($username); if(! ($player instanceof Player) and ! ($player->entity instanceof Entity)) {return "player not found."; } $player->inventory = array(); $player->sendInventory(); }