diff --git a/src/Models/SingleOptin.php b/src/Models/SingleOptin.php
index 279ef3d..cee2273 100644
--- a/src/Models/SingleOptin.php
+++ b/src/Models/SingleOptin.php
@@ -27,26 +27,35 @@ abstract class SingleOptin extends ClientModel
     ];
 
     /**
-     * Set the single opt in status for an email
+     * Set the single opt in status for an email,
+     * with an optionnal answer associated.
      *
-     * @param string  $email
-     * @param boolean $opt_in
+     * @param string              $email
+     * @param boolean             $opt_in
+     * @param array<int,int>|null $answerId
      * @return boolean true if succeeded
      * @throws \LDC\LDCCRM\Exceptions\ValidationException If a field email could not be validated.
      * @throws \LDC\LDCCRM\Exceptions\CrmException If an error occurs on server side or on getting response.
      * @throws \LDC\LDCCRM\Exceptions\ApiErrorException If any error or \LDC\LDCCRM\Enums\ApiError occurs.
      * Possibles are : - singleOptinCustomerExists, If a customer exists with this email.
      */
-    public static function setStatus(#[\SensitiveParameter] string $email, bool $opt_in): bool
+    public static function setStatus(#[\SensitiveParameter] string $email, bool $opt_in, ?array $answerId = null): bool
     {
         self::validateValue('email', $email);
         static::setUpApiInterface();
-        $request = Utils::getResquest('apiV4.optin', [], [
-            'email' => $email,
-            'opt_in' => $opt_in
-        ]);
 
-        $response = static::$apiInterface->call($request);
+        $payload = [
+            'email'  => $email,
+            'opt_in' => $opt_in,
+        ];
+
+        if (!is_null($answerId) && count($answerId)) {
+            $payload['answer_id'] = $answerId;
+        }
+
+        $response = static::$apiInterface->call(
+            Utils::getResquest('apiV4.optin', [], $payload)
+        );
         return $response->status->equals(ApiStatus::OK);
     }