Map Rendering

So I'm currently working with maps, and rendering special things on them. Problem is, I don't know how to only render a single map. With my current code:

Code:java

@EventHandler
    public void onMap(MapInitializeEvent e){
        for(MapRenderer r:e.getMap().getRenderers()) e.getMap().removeRenderer(r);
        e.getMap().addRenderer(new BColorsNameRenderer());
    }

it renders all maps on the server with my custom render, which makes sense from the code. What I want to do is set it up so it only renders the map playeres will get from a command. I thought about doing this through naming the map with metadata, then checking for it, but I can't figure out how to check the item name of a map like one normally would. Now I'm pretty sure if I could figure out how to check the map name this would work with an if statement as currently the renamed map renders normally, but again I don't know how to do this.

What I'm asking:
How could I go about checking the item name of a map, or what would be a better way to register and check that its the map from the command?

 

Still need this if anybody can help.