public void checkDestroy(String sub, String obj) {
		if (this.subjects.containsKey(sub.toLowerCase())
				&& this.objects.containsKey(obj.toLowerCase())) {
			if (this.subjects.get(sub.toLowerCase()).compareLess(
					this.objects.get(obj.toLowerCase()))) {
				
				this.objects.remove(obj);
				this.manage.executeDestroy(obj.toLowerCase());
			}
		}
	}