Is there any way to trigger a function when a person presses enter to create a new paragraph in primitive input

Since the inputs in appgyver seem to have a limit on the number of characters they can hold, I want to try to create a list of paragraphs and use a repeater, then combine all paragraphs into one variable for publishing to database. But I would need to be able to detect when the writers is creating a new paragraph in order to add the next paragraph to list and make it visible and focus the next input. Can this be done?