$message=t('Only numbers and the decimal separator (@separator) allowed in %field.',array('%field'=>t($instance['label']),'@separator'=>$field['settings']['decimal_separator']));
break;
case'integer';
$regexp='@[^-0-9]@';
$message=t('Only numbers are allowed in %field.',array('%field'=>t($instance['label'])));
break;
}
}
}
/**
* FAPI validation of an individual integer element.
form_set_error($error_field,t('Only numbers and the decimal character (%decimal) are allowed in %field.',array('%decimal'=>$field['settings']['decimal'],'%field'=>t($instance['label']))));