Validate Frontend Textfield

You can use JavaScript/jQuery to validate the field. Also if you need server side validation, there is validation filters: wpuf_add_post_validate and wpuf_update_post_validate.

Example:
[php]
function my_example_validation() {
if ( isset( $_POST[‘some_field’] ) ) {
//do any validation
//if any error found, return the error message
return ‘You got some error’;
}

return ”;
}

add_filter( ‘wpuf_add_post_validate’, ‘my_example_validation’ );
[/php]

Neither wpuf_update_post_validate nor wpuf_edit_post_validate have any effect! 🙁