Change field value for field set by Caldera Forms incremental value processor using the caldera_forms_submit_complete action See: https://calderaforms.com/doc/caldera_forms_submit_complete/

caldera_forms_submit_complete.php

<?php
/**
 * Change field value for field set by Caldera Forms incremental value processor
 */
add_action( 'caldera_forms_submit_complete',function( $form, $referrer, $process_id, $entryid ){
	
	//change form ID to match your form
	if( 'CF111' === $form[ 'ID' ] ){
		//change field to match field used with processor
		$field_id = 'fl1345';
		//get saved field value
		$value = Caldera_Forms::get_field_data( $field_id, $form, $entryid );
		if( $value ){
			//change and save
			$value = 'PX-' . $value;
			Caldera_Forms::set_field_data( $field_id, $value, $form, $entryid );
		}

	}

}, 5, 4);

Dear Josh

code works fine to change prefix on generated summary for email automatic entry email. But in autoresponder and copy of email still the numeric count is send. We used LM-30-144 (works on entry email) autoresponder shows 144.

Any idea to fix that? Best regards Marc