Data Transform Configuration:
Create a data transform that copies the selected items to the page list property.
Post-Processing Action:
In the flow action, add the data transform as a post-processing action to ensure it executes after the form submission.
Testing:
Test the form submission to verify that the selected items are correctly copied to the page list property.
Reference:
Pega Academy: Data Transform and Flow Actions.
Pega Documentation: Configuring Post-Processing Actions.