/** Receive account value. */
 public synchronized void accountValue(String account, String tag, String value, String currency) {
   if (account.equals(m_selAcct)) {
     try {
       MarketValueTag mvTag = MarketValueTag.valueOf(tag);
       m_mktValModel.handle(account, currency, mvTag, value);
     } catch (Exception e) {
       m_marginModel.handle(tag, value, currency, account);
     }
   }
 }