Created an expense report form, with a table for tracking expenses as line items, including columns for Purpose (ie, category) and Amount. It utilizes JavaScript to calculate subtotals automatically, depending on the value in a row’s Purpose column.

This solution works in Forms 10.2 but doesn't work in Forms 10.3.1 Update 2. Here is the JavaScript code:

Below are the screenshots:

Any ideas on what the issue might be?