Running total across 2 grouping

Question

Hi All
I have created a crystal report and i have 2 remaining issues that i just cant get around.
the report is basically about all the net stock position.
the report is based on a query..that links sales order to all target documents that originate from the sales orders, i.e...deliveries, invoices, returns, credit notes.
then i also brought in all the open purchase orders and the instock from the oitw
i then sumed up the lines so the sales order > Delivery > invoice > credit note > returns all shows in one line..and if there is a different unit of measure it will be another line for that sales order
the report is grouped:
                              per warehouse
                              per item
                              per Sales Order Num
                              per Item Unit of Measure
                              per Line Num
1st issue:
in the selection criteria if the sales order is closed but if one of the delivery notes is open it should bring in the "whole set" not just the the open deliverys linked to the sales order.
this is because the delivered quantities adds up to the net position of the stock.
2nd issue:
I have to work out a net postion
formula: net stock = Oitw.instock + PO - remaining qty on sales order
I got the sales order as a negative
i used a running total formula, but it does not work if the sales order has more then one unit of measure.
whileprintingrecords;
If onfirstrecord or previous({Command.SO No.})<>{Command.SO No.} then
numbervar remain_bal:= remain_bal + {@QTY}
i tried to add another if statement..but does not work
whileprintingrecords;
If onfirstrecord or previous({Command.SO No.})<>{Command.SO No.} then
If onfirstrecord or previous({Command.SO Uom)<>{Command.SO Uom.}  then
numbervar remain_bal:= remain_bal + {@QTY}
any help will be gladly welcomed..
thank you all
Jerusha

Answer 1

Hi Dave
Thank you very much for your feedback.
I have been using the base UoM, ie InvQty field.
my issues comes where i am grouping I am 1st grouping by sales order num, then by uom as the customer wants to see that as separate entries
Example:
SO Num     Uom     Qty     InvQty
1               Bags     50         200
1               Bulk     100        100
This is the forumula for the running total:
If onfirstrecord or previous ({Command.SO No.}) <> ({Command.SO No.}) then
if ({Command.Doc Type}) = 'SO' then
    SO := SO + {@QTY}
However when i "print" my total and add it to the footer.. it will show 200 instead of 300.
Thanks
Jerusha