I am attempting to perform a simple subtraction function across two lists in Sharepoint 2010.
I have one list called Inventory that has part number, part name, and quantity.
I have a second list called Tasks that has title, description, status, used part, and quantity.
I have a workflow rule that states the following:
The issue is that it's just throwing an error when I run a test task with a status of completed, used part selected, and quantity field holding an integer value.
I am creating the workflow and attached it to the Tasks lists, so all current item equal items in the tasks.
The end of update item in Inventory I am setting the variable New Inventory to be the new value of quantity in the Inventory lists.
Any help with this would be great. Thanks.
