speed Effect

Hello guys i wanna use speed effect in my plugin , how can i do it???Tell me please if you know....
Is there any way to fix speed effect????

PHP:

$effect = Effect::get(Effect::SPEED);
$effect->setAmplifier(2);
$effect->setDuration(999);

$player->addEffect($effect);

You have to send an UpdateAttributePacket. PocketMine will fix it soon.

Speed attribute?

Yep e.g. https://github.com/ClearSkyTeam/ClearSky/blob/master/src/pocketmine/entity/AttributeManager.php#L31