Solved Whats problem

public function onDamage(EntityDamageByEntityEvent $event){
if($event->getDamager() instanceof Player and $event->getEntity() instanceof Player){
$damager = $event->getDamager();
$ih = $damager->getInventory()->getItemInHand();
if($ih->getId() == 280){
$pl = $event->getEntity();
$pl->setMotion(new Vector3(0, 8, 0));
$pl->sendMessage(TF::GOLD."Author".TF::RED.":".TF::GREEN." PeGaH\n".TF::GOLD."TelegramID".TF::RED.":".TF::GREEN." @P_3_G_A_H");
}
}
}

why this code dont work?
i want to make a this plugin :
if player1 damage to player2 with stick in hands player2 jump

 

Any errors? Is the plugin loaded?

 

yes plugin loaded and command are working but player1 damage time with stick player2 dont jump and dont send message

 

Try adding some print("test"); in the code to check where it stops

 

i add, and code dont work
i think onDamage have a problem

 

Did you implement listener?

 

no. i should implement listener?

 

now i implement listener but dont work again

 

register events in onEnable

 

thanks, working whith register event