Sign Update?

Hello, I have a problem with my cloud and my cloud is not currently being updated
i also work with query
how can i fix it?
$query['Players'];
$query['MaxPlayers'];
if (strtolower($event->getLine(0) === "cloud")) {
if ($event->getLine(1) === "server1") {
$event->setLine(0, "§8==§bCLOUD§8==");
$event->setLine(1, "[FFA]");
$event->setLine(2, "" . $query['Players'] . "§0/" . $query['MaxPlayers'] . "");
$event->setLine(3, "§a•••");

I have no idea how i create a task