July 24, 201213 yr Newbies Hi, I am new to this. I want to track stock and have a portal on my product page which shows invoice line items relating to a given product. The qualities in each of these line items are summed (via another filtered portal from a sum calculation in line items). I have an opening stock for each product and I want to subtract the total sold (from line item portal) to this. Is this possible? Many thanks, Alex
July 24, 201213 yr Author Newbies Not sure why but the calculation automatically included the filter so it works with no coding.
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