public boolean onBlockPlacedBy(World world, int i, int j, int k, int l, EntityLiving entityliving)
	{
	    l = world.getBlockId(i, j - 1, k);
	    if(l==0)
		{
		world.setBlockWithNotify( i, j, k, 0);
		}
		if(l==102)
		{
		world.setBlockWithNotify( i, j, k, 0);

		}

	return true;
	}