include both _name and _dataname

Author: ronnyli

alpaca_backtrader_api/alpacastore.py

@@ -543,7 +543,7 @@ def _t_account(self):
 
     def order_create(self, order, stopside=None, takeside=None, **kwargs):
         okwargs = dict()
-        okwargs['symbol'] = order.data._name
+        okwargs['symbol'] = order.data._name if order.data._name else order.data._dataname
         okwargs['qty'] = abs(int(order.created.size))
         okwargs['side'] = 'buy' if order.isbuy() else 'sell'
         okwargs['type'] = self._ORDEREXECS[order.exectype]