Set custom Customer attribute value programmatically Magento 2 - magento

Question

I am importing some customers with :
$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$customerFactory = $objectManager->create('\Magento\Customer\Model\CustomerFactory');
$customer = $objectManager->create('Magento\Customer\Model\Customer')->setWebsiteId(1)->loadByEmail('customrr#custom.com');
try {
if(!empty($customer->getData('email')))
{
$customer->setAttr1(1); // Attr1 = Name of the custom Attribute
$customer->setAttr2(2); // Attr2 = Name of the custom Attribute
}
else
{
$customer = $customerFactory->create()->setWebsiteId(1);
}
$customer->setLastname("Lastname");
$customer->setFirstname("Firsty");
.....
$customer->save();
The customer is saved with all his standard attributes correctly but my new attributes won't be saved anyway. I've also tried :
$customer->setCustomAttribute('Attr1','value');
but this didn't work too.
The custom Attribute are shown correclty in Magentos 2 backoffice and the values are saved correctly too if creating a customer manually.

Answer 1

Have you tried:
$customer-> setData('Attr1','value');
and don't forget to save and log the information:
try {
$customer->save();
} catch (\Exception $e) {
// log exception so you can debug the issue if there is one
}

Answer 2

<?php
namespace Custom\Module\Setup;
use Magento\Eav\Model\Config;
use Magento\Eav\Setup\EavSetup;
use Magento\Eav\Setup\EavSetupFactory;
use Magento\Framework\Setup\InstallDataInterface;
use Magento\Framework\Setup\ModuleContextInterface;
use Magento\Framework\Setup\ModuleDataSetupInterface;
class InstallData implements InstallDataInterface
{
private $eavSetupFactory;
public function __construct(
EavSetupFactory $eavSetupFactory,
Config $eavConfig
) {
$this->eavSetupFactory = $eavSetupFactory;
$this->eavConfig = $eavConfig;
}
public function install(ModuleDataSetupInterface $setup, ModuleContextInterface $context)
{
$eavSetup = $this->eavSetupFactory->create(['setup' => $setup]);
$eavSetup->addAttribute(\Magento\Customer\Model\Customer::ENTITY, 'custom_attribute', [
'label' => 'Label',
'system' => 0,
'position' => 720,
'sort_order' => 720,
'visible' => true,
'note' => '',
'type' => 'int',
'input' => 'boolean',
'source' => 'Magento\Eav\Model\Entity\Attribute\Source\Boolean',
'backend' => \Custom\Module\Model\Customer\Attribute\Backend\DoWHatEver::class,
]
);
$attribute = $this->getEavConfig()->getAttribute(\Magento\Customer\Model\Customer::ENTITY, 'custom_attribute');
$attribute->addData([
'is_user_defined' => 1,
'is_required' => 0,
'default_value' => 0,
'used_in_forms', ['adminhtml_customer']
])->save();
}
public function getEavConfig()
{
return $this->eavConfig;
}
}