//This will work for a very specific landanum, only when you use that specific landanum.
void OnStart()
{
	AddTimer("Landanum", 1.0f, "CheckLandanum");
}

void CheckLandanum(string &in asTimer)
{
	if(HasItem("potion_health_1"))
	{
		SetLocalVarInt("Var1", 1);
		AddTimer("Landanum", 1.0f, "CheckLandanum");
	}
	else
	{
		if(GetLocalVarInt("Var1") == 1)
		{
			OnPlayerUseLandanum();
		}
		else AddTimer("Landanum", 1.0f, "CheckLandanum");
	}
}
void OnPlayerUseLandanum()
{

}