first time workbook user here so be gentle - I'm trying to get from an Item Fulfillment record to the

total

field on the Parent Sales Order, I've tried setting up the following heirarchy

Transaction
Transaction Line
Created From (Transaction)

but there's no

Total

field here (which I'd expect it to be, which means I must be missing something). Any idea where I should be looking instead?

Do you mean the "Amount" field?