@EventHandler
	public void onPlayerMove(PlayerMoveEvent e) {
		Player p = e.getPlayer();
		Block b = e.getTo().add(0.0D, -1.0D, 0.0D).getBlock();
		if(b.getType() == Material.STONE_PLATE && p.getLocation().getBlock().getRelative(BlockFace.DOWN).getType()== Material.GRAVEL) {
			 p.getWorld().createExplosion(p.getLocation(), 0.0F, true);
			 p.getLocation().getBlock().getRelative(BlockFace.DOWN).setType(Material.AIR);
		}
	}