Order fill and size 0

[dasch]

When filling an order which has a size for example of 1 with -1 will generate an division by zero Exception

 File "../../libs/backtrader/order.py", line 199, in addbit
   self.price = (oldvalue + newvalue) / self.size
ZeroDivisionError: float division by zero

i am trying to update exisiting orders when creating new orders. I am using oanda. When sending a new order, this may affect existing trades (tradesClosed, tradeReduced). Everything is working except setting the order to a size of zero, when it gets closed.

Is this a bug in backtrader or should i close trades in a different way?

[dasch]

Nevermind, it was some obscure error in my code.