* @var string
*
* @Assert\NotBlank()
- * @RulerZAssert\ValidRule()
+ * @RulerZAssert\ValidRule(allowed_variables={"title", "url", "isArchived", "isStared", "content", "language", "mimetype", "readingTime", "domainName"})
* @ORM\Column(name="rule", type="string", nullable=false)
*/
private $rule;