private void hexString(StringBuffer sb ,int i, int j){
        FieldCreature cr = getHex(i, j);
        if (cr  != null) {
            String s = cr.getAttack() + "/" + cr.getHealth();
            addStringHex(sb, s);

        } else {
            addStringHex(sb, "X");
        }
        sb.append(",");
    }