Solved I dont know.

i want to create zoom plugin so the plugin must Add slowness for Zoom When player sneaking.

It not add Effect to player But it can send massage only.

PHP:

public function onSneak(PlayerToggleSneakEvent $event){
            $player = $event->getPlayer();
    if($event->isSneaking()){
                    $effect = Effect::getEffect(2);
                    $effect->setAmplifier(10);
                    $effect->setVisible(false);
                    $effect->setDuration(100000000);
                    $player->addEffect($effect);
        $this->getServer()->broadcastMessage("You Do it");
        return true;
        }
    if(!($event->isSneaking())){
        $player->removeEffect(2);
        $this->getServer()->broadcastMessage("You See it");
     return true;
}
}

MCPE 1.16.0

 

Then You're adding the effects incorrectly. There's plenty of examples out there!

 

Ok i will try

 

Thx

 

Umm I have problem again.
I wan to Remove Effect But i cant to do it