How insert a AES_ENCRYPT value in a table field

Hi there,
I'm trying to insert an encrypted data:

Because '"INSERT statements are not allowed in DQL, ...." i processed like this:
<?php
...
// controller
$membre = new \Entity\TMembre();
$membre->setPassword($password);
$em->persist($membre);
$em->flush();
...
?>
//entity
<?php
namespace Entity;
/**

• TMembre
  *
• @Table(name="t_membre")
• @Entity(repositoryClass="Repository\TMembreRepository")
  */
  class TMembre
  {
  /**
• Set password *
• @param string $password */
  public function setPassword($password) { $this->email = "AES_ENCRYPT('".$email."','"._MYSQL_CRYPT."')"; => insert this entire string without executing encryption $this->email = new \Doctrine\ORM\Query\Expr\Func("AES_ENCRYPT",array("'".$email."'","'"._MYSQL_CRYPT."'")); => does not work }

  }
  ?>

How can i do ?
Add this method to Doctrine\ORM\Query\Expr class ?

/**
public function aesEncrypt($value)

Best regards

David