drupal 7: How to altering Webform components?

function YourThemeName_form_alter( &$form, &$form_state,$form_id ){
// information about structure of the form array
dpm($form);

// show details about component name
dpm($form[‚submitted’][‚name’]);

// limit altering to specific form
if ($form_id == ‚webform_client_form_133’) {
$form[‚submitted’][‚name’][‚title’] = ‚Title’;
$form[‚submitted’][‚name’][‚#prefix’] = ‚

‚;
$form[‚submitted’][‚name’][‚#suffix’] = ‚

‚;
$form[‚submitted’][‚name’][‚#field_suffix’] = ‚suffix’;
}
}