<?php
/**
* Send additional data back to the browser when connected forms advances
*/
add_filter( 'cf_form_connector_return_data', function( $data ) {

	//check if right form
	//Change form ID for connected form
	if ( 'cf1234567' == $data[ 'connected_form_id' ] ) {
		//Get data from a field
		$field_data               = Caldera_Forms::get_field_data( //field ID for field you want data from
			'fld1234567', //form configuration for connected form
			Caldera_Forms_Forms::get_form( $data[ 'connected_form_id' ] ), //entry ID for connected form
			$data[ 'entry_id' ] );

		//add to field data to return data
		$data[ 'something' ]      = $field_data;

		//add something else to return data
		$data[ 'something_else' ] = 'Hi Ron';

	}

	return $data;

});