diff --git a/Models/PromotionAttributeValue.php b/Models/PromotionAttributeValue.php
index ea7b85d..e184b03 100755
--- a/Models/PromotionAttributeValue.php
+++ b/Models/PromotionAttributeValue.php
@@ -111,7 +111,7 @@ class PromotionAttributeValue implements \JsonSerializable
     /**
      * Set value
      *
-     * @param int|string|float $value Value
+     * @param null|int|string|float $value Value
      *
      * @return void
      *