I want to cancel lava/water placement on a vanilla server, this code works but not on a vanilla server, so my question is if there is any way to cancel lava/water placement client side so the lava doesn't reach the server at all.

 

    [embed=425,349]@SubscribeEvent

    public void onBucketFill(FillBucketEvent event) {

        event.setCanceled(true);

    }[/embed]

Ok if there is a "hard" way could you point me in the right direction of what I would need to do?

Thanks for the quick answer