Check if in WorldGuard Region

Hey,
I'm pretty new to devoloping Plugins and now I've been trying for a about an hour to get WorldGuard integrated, but I just keep failing.

Code:

    @EventHandler(priority = EventPriority.NORMAL)
    public void onSaplingBreak(BlockBreakEvent sap)
    {
        if (sap.getBlock().getType() == Material.SAPLING){
            sap.setCancelled(true);
            sap.getPlayer().sendMessage(ChatColor.GREEN + "[TreeFarm] " + ChatColor.RED + "Don't destroy the Saplings!");
        }

This is my code and I would like to add right on the top that it checks "if (region == treefarm)". So the code only executes if a block is broken inside of a certain WorldGuard region.

 

Have you seen this?
http://wiki.sk89q.com/wiki/WorldGuard/Regions/API

 

Yes but I don't understand it enough to get it to work with a if-clause. I'd really appreciate someone could give me an example how to read out what region the block was broken and if it maches for example the region 'treefarm'

Well I couldnt get WorldGuard figured out so I used this...

Code:

            int x1,y1,z1;
            x1 = sap.getBlock().getX();
            y1 = sap.getBlock().getY();
            z1 = sap.getBlock().getZ();
         
                if (x1 > -60 && x1 < -29){
                if (y1 > 0 && y1 < 255){
                if (z1 > 334 && z1 < 356){

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