problem looping through blocks and setting type to water.

I have 2 locations saved, and loop through all blocks between them, and set the material to water. Works perfectly the 1st time but each time after that the water instantly drains away. Not sure why its draining. I tried using Material.WATER then Material.STATIONARY_WATER and then tried setting the blocks to air, adding a 1 second delay, then setting them to water.

Code as of now:

Code:

private void refillWater() {
        final World world = Bukkit.getWorld(config.getString("Bases." + basename + ".waterpos1.world"));
        int x1 = config.getInt("Bases." + basename + ".waterpos1.x");
        int x2 = config.getInt("Bases." + basename + ".waterpos2.x");
        int z1 = config.getInt("Bases." + basename + ".waterpos1.z");
        int z2 = config.getInt("Bases." + basename + ".waterpos2.z");
        final int y = config.getInt("Bases." + basename + ".waterpos1.y");
        final int xmin = Math.min(x1, x2) - 1;
        final int xmax = Math.max(x1, x2);
        final int zmin = Math.min(z1, z2) - 1;
        final int zmax = Math.max(z1, z2);
       
        for (int x = xmin; x < xmax; x++){
            for (int z = zmin; z < zmax; z++){
                Material mat = world.getBlockAt(x, y, z).getType();
                if (!(mat.equals(Material.WATER) || mat.equals(Material.STATIONARY_WATER))){
                    world.getBlockAt(x, y, z).setType(Material.AIR);
                }
            }
        }
       
        Bukkit.getScheduler().scheduleSyncDelayedTask(plugin, new Runnable(){
            @Override
            public void run() {
                for (int x = xmin; x < xmax; x++){
                    for (int z = zmin; z < zmax; z++){
                        Material mat = world.getBlockAt(x, y, z).getType();
                        if (!(mat.equals(Material.WATER) || mat.equals(Material.STATIONARY_WATER))){
                            world.getBlockAt(x, y, z).setType(Material.STATIONARY_WATER);
                        }
                    }
                }
                Bukkit.broadcastMessage("Water refilled");               
            }       
        },20L);
       
    }

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

the_merciless
By drain way, what do you mean? Like it disappears, or does gravity take effect?

 

No not disappear, its like the source block has been removed, but they should all be source blocks

Heres a video http://screencast.com/t/kePUu7KU2I8x