Adding a UD field that automatically updates upon save within Price List Maintenance

I am looking for a bit of advice on adding a UD field within Erp.PriceList that would contain a time stamp whenever a user makes a change to that specific list. I am familiar with creating the UD column and connecting it to the standard Epicor table, as well as customization within the form.

My question is where to place the code which would automatically generate the timestamp based off current time, so it would write this to the corresponding UD field whenever a user saves a change within Price List Maintenance. My fall back option would be to create a date box within the form the user can manually update, but would like to automate to avoid any mistakes, as this would be providing a selection criteria for an external integration BAQ.

Thanks in advance for any help that can be offered.
-Tim

You’d do this with a BPM, on PriceList Update method.