[QuickForm] addRule

Bonjour Bertrand, Could you please give an example for a validation rule on an ElementGroup. All the examples provided perform validation on addElement fields > Can anybody help on setting and "addRule" onto an "addElementGroup" > What's wrong with the following code ? > > // Creates a group of text inputs > $areaCode = &HTML_QuickForm::createElement('text', ''); > $areaCode->setSize(3); > $areaCode->setMaxLength(3); > $phoneNo1 = &HTML_QuickForm::createElement('text', ''); > $phoneNo1->setSize(3); > $phoneNo1->setMaxLength(3); > $phoneNo2 = &HTML_QuickForm::createElement('text', ''); > $phoneNo2->setSize(4); > $phoneNo2->setMaxLength(4); > $form->addElementGroup(array($areaCode, $phoneNo1, $phoneNo2), > 'Telephone:', > 'Phone', '-'); > $form->addRule('Phone', 'Phone is incomplete', 'required'); >