Profile: larryL

Problem: I want to create a select field with multiple options, and set the value of another custom field depending on the value selected in the select field.

Solution: You can use custom code with the cred_save_data API to get the selected value from one field and save a corresponding value into a Types custom field programmatically. You can find the field selections in the $_POST superglobal. Types fields have a key of "wpcf-" plus the field slug. Generic fields have a key identical to the field slug. So if the select field is a Types field with the slug "select-field", then you would be able to get the selected value like so:

$_POST['wpcf-select-field']

If it is a generic field with the slug "select-field", then you would be able to get the selected value like so:

$_POST['select-field']

Use the WP function update_post_meta to set a Types field value programmatically. A full example:

add_action('cred_save_data', 'tssupp_set_selected_value',10,2);
function tssupp_set_selected_value($post_id, $form_data) {
  $forms = array( 123 );
  if ( in_array( $form_data['id'], $forms ) )
  {
    $selected = $_POST['wpcf-select-field'];
    update_post_meta( $post_id, 'wpcf-points-field', $selected);
  }
}

You would change 123 to be the numeric ID of the Form, wpcf-select-field to be the slug of the select field (with the wpcf- prefix if this is a Types field), and wpcf-points-field to be the slug of the points field (with the wpcf- prefix if this is a Types field). That would save the selected value of the select field into the points field when the Form is submitted.

Relevant Documentation:
https://toolset.com/documentation/programmer-reference/cred-api/#cred_save_data
https://developer.wordpress.org/reference/functions/update_post_meta/