We are currently implementing FSM and our accountants would like a debit column and a credit column added to the Journal Entry Speed Transaction screen instead of entering a negative value in the TransactionAmount for a credit and positive for a debit. I added the fields to the list but cannot figure out how to set the TransactionAmount field based on the input from these columns.
I have it working on the Transactions form which is not a list, but it appears I cannot modify fields on an inline create in a list. To make sure it wasn't something related to my new fields, I created a simple Hello World example where I set the Description of the journal entry line to Hello World when the TransactionAmount is entered.

Unfortunately, it does not work on entry.

I am very new to FSM and LPL, so I thought I would double check with you all to see if I am missing some syntax to set this field in the list based on data from another.