//WORKS WITH CONCRETE_5 VER. 8.3.1
      use page;
use Block;
      use BlockType;
      use Express;
 
      $page = Page::getByID(HOME_CID);
        //MAKE CONTACT FORM
        $formExpressObject = Express::getObjectByHandle('kontakt');
        if (is_object($formExpressObject)) {
            throw new Exception(t('An express object with this handle already exists.'));
        } else {
            $attrKeys = array(
                'keyName'       => 'name',
                'keyEmail'      => 'email',
                'keyMessage'    => 'message'
            );
            $kontakt = Express::buildObject('kontakt', 'Kontakte', 'Ines Gabor Kontaktformular', $pkg);
            $kontakt->addAttribute('text', 'Dein Name', $attrKeys['keyName']);
            $kontakt->addAttribute('email', 'Deine E-Mail-Adresse', $attrKeys['keyEmail']);
            $kontakt->addAttribute('textarea', 'Deine Nachricht', $attrKeys['keyMessage']);
            $kontaktEntity = $kontakt->save();
 
            $form = $kontakt->buildForm('Form');
            $fieldSet = $form->addFieldset('');
            $fieldSet->addAttributeKeyControl($attrKeys['keyName']);
            $fieldSet->addAttributeKeyControl($attrKeys['keyEmail']);
            $fieldSet->addAttributeKeyControl($attrKeys['keyMessage']);
            $form = $form->save();
 
            $kontakt->getEntity()->setDefaultViewForm($form);
            $kontakt->getEntity()->setDefaultEditForm($form);
            $kontakt->save();
 
            //PUT EXPRESS-FORM-BLOCK INTO AREA 'KONTAKT'
            $block = BlockType::getByHandle('express_form');
            $data = array(
                'exFormID' => $form->getID(),
                'thankyouMsg' => 'Thank you for your input.',
                'notifyMeOnSubmission' => '1',
                'recipientEmail' => 'mail@domain.com',
                'displayCaptcha' => '1'
            );
            $page->addBlock($block, 'Kontakt', $data);
 
            //SET ALL INPUTS ON 'REQUIRED'
            $db = Database::connection();
            foreach($attrKeys as $attrKey) {
                $v = array(true, $attrKey, 'expresskey');
                $q = 'UPDATE (AttributeKeys INNER JOIN ExpressFormFieldSetAttributeKeyControls ON AttributeKeys.akID = ExpressFormFieldSetAttributeKeyControls.akID) INNER JOIN ExpressFormFieldSetControls ON ExpressFormFieldSetAttributeKeyControls.id = ExpressFormFieldSetControls.id SET ExpressFormFieldSetControls.is_required = ?
WHERE (((AttributeKeys.akHandle)= ?) AND ((AttributeKeys.akCategory)= ?));';
                $db->executeQuery($q, $v);
            }
        }