$field->systemname = $this->trimmed('systemname');
if (!gnusocial_field_systemname_validate($field->systemname)) {
$this->clientError(_('Internal system name must be unique and consist of only alphanumeric characters!'));
$field->systemname = $this->trimmed('systemname');
if (!gnusocial_field_systemname_validate($field->systemname)) {
$this->clientError(_('Internal system name must be unique and consist of only alphanumeric characters!'));