Block redstone change.

Is there any way to block a change in redstone state? I'm trying to block a door from being able to be opened by redstone.

Here is what i'm trying but not working:

Code:

@Override
	public void onBlockRedstoneChange(BlockFromToEvent event) {
		Block changedBlock = event.getBlock();

		if (changedBlock.getType() == Material.WOODEN_DOOR) {
			World blockWorld = changedBlock.getWorld();
			Block DoorBlock = blockWorld.getBlockAt(changedBlock.getX(),
					changedBlock.getY() + 1, changedBlock.getZ());
			// For when someone clicks the bottom of the door
			if (DoorBlock.getType() != changedBlock.getType()) {
				DoorBlock = blockWorld.getBlockAt(changedBlock.getX(),
						changedBlock.getY(), changedBlock.getZ());
			}

			String loc = Messages.getString("DoorBlockListener.31"); //$NON-NLS-1$
			loc += String.valueOf(DoorBlock.getX())
					+ Messages.getString("DoorBlockListener.32"); //$NON-NLS-1$
			loc += String.valueOf(DoorBlock.getY())
					+ Messages.getString("DoorBlockListener.33"); //$NON-NLS-1$
			loc += String.valueOf(DoorBlock.getZ());
			DoorObject DoorObj = plugin.doorHandler.getDoorObject(loc);

			if (DoorObj != null) {
				event.setCancelled(true);
			}
		}
	}

 

For the door itself? No, I don't think so. The closest you can get is checking if the wire being changed, but... why would you do this?