[SOLVED] Strange resaults?

Edit: I fixed it.

I've been talking to a friend of mine that uses one of my plugins, ImgMap. Apparently, whenever he does multiple maps with different images on them, it changes all the maps to that picture, regardless of map ID.

Code:JAVA

MapView map = Bukkit.getServer().getMap(item.getDurability());
if(normalrender != new ImgRenderer()){
normalrender = map.getRenderers().get(0);
}
url = args[0];
try{ map.removeRenderer(map.getRenderers().get(0)); }catch(Exception e){}
map.addRenderer(new ImgRenderer());
getServer().getPlayer(sender.getName()).sendMessage(ChatColor.GREEN + "[ImgMap] Now rendering " + args[0]);

If I getMap() any ID, it changes all the maps for whatever reason. Is this a Bukkit bug or is it my fault?