[Akkadius]

Well I just so happened to test this today and it does indeed work.

You just need to make sure you cast:

$CT was me getting my pet target, really this would affect any NPC I targeted

sub EVENT_TARGET_CHANGE{
	if($client->GetAggroCount() == 0){
		### Test Scaling ###
		if($name eq "Akkasham"){
			$CT = $client->GetTarget();
			$CT->CastToNPC()->ModifyNPCStat("max_hp", "10000000");
			$CT->CastToNPC()->SetHP($CT->GetMaxHP());
		}
        }
}