Solved How to return to the line on textarea

PHP:

<?php

namespace ArmTheDev\customuitest;

#pocketmine
use pocketmine\plugin\PluginBase;
use pocketmine\utils\TextFormat;
use pocketmine\scheduler\PluginTask;
use pocketmine\Server;
use pocketmine\Player;
use pocketmine\event\Listener;
use pocketmine\network\mcpe\protocol\PacketPool;

#xenialdan
use xenialdan\customui\API as UIAPI;
use xenialdan\customui\elements\Button;
use xenialdan\customui\network\ModalFormRequestPacket;
use xenialdan\customui\network\ModalFormResponsePacket;
use xenialdan\customui\network\ServerSettingsRequestPacket;
use xenialdan\customui\network\ServerSettingsResponsePacket;
use xenialdan\customui\windows\SimpleForm;

class Loader extends PluginBase{

    public static $uis;

    public function onEnable(){
        $this->getServer()->getScheduler()->scheduleRepeatingTask(new TTask($this), 4);
        PacketPool::registerPacket(new ModalFormRequestPacket());
        PacketPool::registerPacket(new ModalFormResponsePacket());
        PacketPool::registerPacket(new ServerSettingsRequestPacket());
        PacketPool::registerPacket(new ServerSettingsResponsePacket());
        $this->reloadUIs();
    }

    public function reloadUIs(){
        UIAPI::resetUIs($this);
     
        $ui = new SimpleForm('Serveur List');
     
        $playersOnline = count($this->getServer()->getOnlinePlayers());
        $maxOnline = $this->getServer()->getMaxPlayers();
     
        $button = new Button($playersOnline . '/' . $maxOnline);
        //     $playersOnline . "/" . $maxOnline
        //                    Return to the line  <-------How to
        //                        "Server-1"
        $ui->addButton($button);
     
        self::$uis['simpleUI'] = UIAPI::addUI($this, $ui);
    }
}

class TTask extends PluginTask{
 
    public function onRun(int $currentTick){
        $this->getOwner()->reloadUIs();
    }
}

I can use PHP_EOL but I used it very little
(\n explode and implode )

 

Don't use PHP_EOL. The value changes depending on if the server is run on Windows or Linux/Mac

 

I use linux

 

That correct exemple?

PHP:

$this->message("Hello" . str_replace('\n', PHP_EOL, "World"));

 

PHP:

$this->message(“Hello\nWorld”);

 

Dame thing with variable ?

PHP:

$this->message($variable1 \n $variable2);

 

No \n must be in “” so it wud be

PHP:

$this->message($variable1 . “\n” . $variable2);

 

Thx ^~^