This article was written for Page Builder Sandwich 5 or earlier. Page Builder Sandwich 6 is a new block builder, so some steps and screens here may differ. Getting started with version 6
pbs.save.payload
Called right before the editor saves the contents. You can use this to place additional data to send during saving (this doesn’t save the data, just sends it via Ajax to the backend)
Parameters
payload
FormData object. The data sent via Ajax for saving.
Example
wp.hooks.addAction( 'pbs.save.payload', function( payload ) {
// Add data to be sent during saving.
payload.append( 'my_data', 'My Data' );
}