Block Place and build Tower

So now after the Command works, the Building does not. This is the Code. It should build a Striaght Tower up in the Sky, it worked the whole time but now while updating it doesn't. When I place a Block the Block disappears and i have the same amount as before.

Code:

public void tower1(BlockPlaceEvent event)
    {
        Player player = event.getPlayer( );
        Block block = event.getBlockPlaced( );
        Material mat = Material.getMaterial(block.getTypeId( ) );
        ItemStack hand = event.getItemInHand( );
        if ( JMPlayerListener.plugin.tower1Enabled( player ) == true )
        {
            int j = hand.getAmount();
            for (int i = 0 ; i < j - 1 ; i++)
            {
                Block newBlock = player.getWorld( ).getBlockAt(block.getX( ), block.getY( ) + i, block.getZ( ) );
                newBlock.setType( mat );
                hand.setAmount( hand.getAmount( )-1);
            }
            event.setCancelled(true);
            plugin.toogleTower1( player );
            hand.setAmount(hand.getAmount( ) - 1);
        }

    }

Thanks for Helping
Zero

 

I'm getting a similar problem since the change from BLOCK_PLACED to BLOCK_PLACE, maybe they changed something else too?

 

It seems so, maybe someone knows a solution for that?

 

Code:

            plugin.toogleTower1( player );

Isn't it supposed to be toggleTower1 ?
And if you cancel the event - isn't the block removed?

Though I'm unsure how it works, I'm fairly new

 

No no, thats allright, as I said everything worked fine in the past, and I just changed the BLOCK_PLACE. Isn't someone out there who has the same problem and a solution?

 

It seems I found the Problem. The method event.getItemInHand().getAmount() always returns 1. Even if I have a Full stack in my Hands. It looks like a Problem in Bukkit itself rather than a problem I caused.