Adding a form to slapper without commands

This may sound like a dumb question but how do I add a form to a slapper or any action without having to add a command to it?

 

PHP:

public function onEntityDamage(EntityDamageEvent $event): void {
        $entity = $event->getEntity();
       if ($entity instanceof SlapperEntity || $entity instanceof SlapperHuman) {
              // Code
       }
}  


 

Thanks but how do I set it to a specific Human Slapper?

 

PHP:

/**
* Called when player hit a slapper entity
* @param \slapper\events\SlapperHitEvent $event
*/
public function onSlapperHit(SlapperHitEvent $event) {
   $slapper = $event->getEntity();
   $player = $event->getDamager();
   $slapperName = $slapper->getNameTag();
   if ($slapperName === "MySlapper") {
      // ...
   }
}


 

Thank you!!!!

 

Spoiler: Example

PHP:

    public function onSlapperHit(SlapperHitEvent $event) // \slapper\events\SlapperHitEvent
    {
        $slapper = $event->getEntity();
        $player = $event->getDamager();
        $slapperName = $slapper->getNameTag();
        $slapperTag = $slapper->namedtag;
        if ($slapperName === "TempName") {
            $slapper->setNameTag("TheRealName");
            if (!$slapperTag->hasTag("Form", StringTag::class)) { // \pocketmine\nbt\tag\StringTag
                $slapperTag->setString("Form", "Rules");
            }
        }
        if ($slapperTag->hasTag("Form", StringTag::class)) { 
            $this->openForm($player, $slapperTag->getString("Form"));
        }
    }

    private function openForm(Player $player, string $type)
    {
        if ($type === "Rules") {
            $form = new SimpleForm(function (Player $player, $data = null) {
                if ($data === "r1") {
                    // ...
                }
            });
            $form->setTitle("MyRules");
            $form->setContent("Read These Rules!");
            $form->addButton("Rule 1", -1, "", "r1");
            $player->sendForm($form);
        }
    }