We cannot modify fields on existing records in beforeLoad.
Here’s a snippet of beforeLoad limitations:
- beforeLoad user events cannot be triggered when you load/access an online form.
- Data cannot be manipulated for records that are loaded in beforeLoad scripts. If you attempt to update a record loaded in beforeLoad, the logic is ignored.
- Data can be manipulated for records created in beforeLoad user events.
- Attaching a child custom record to its parent or detaching a child custom record from its parent triggers an edit event.