Hey there, started to play around with scripting, although I can't find where to test my script, nothing is shown within the client, i'm assuming something is not right with my script manifest?, my code; 
import org.osbot.rs07.api.model.NPC;
import org.osbot.rs07.script.Script;
import org.osbot.rs07.script.ScriptManifest;
@ScriptManifest(name = "Cow Killer", author = "programer", version = 1.0, info = "", logo = "")
public class CowKiller extends Script{
    private String message;
    @Override
    public void onStart() throws InterruptedException {
        for(NPC n : npcs.getAll()){
            if(n != null)
                message = n.getName() + ", " + n.getId();
                System.out.println(message);
        }
    }
    @Override
    public int onLoop() throws InterruptedException {
        return 0;
    }
}