Use keyword parameter.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@10390 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/SupplyLine.py

@@ -223,7 +223,7 @@ class SupplyLine(DeliveryLine, Path):
       """
         Update the quantity predicate for this price parameter
       """
-      quantity_step_list = self.getQuantityStepList(price_parameter)
+      quantity_step_list = self.getQuantityStepList(price_parameter=price_parameter)
       quantity_step_list.sort()
       
       # remove old predicates