diff --git a/tduck-project/src/main/java/com/tduck/cloud/project/entity/struct/CascaderExpandStruct.java b/tduck-project/src/main/java/com/tduck/cloud/project/entity/struct/CascaderExpandStruct.java
index 3fbc713..e8feb40 100644
--- a/tduck-project/src/main/java/com/tduck/cloud/project/entity/struct/CascaderExpandStruct.java
+++ b/tduck-project/src/main/java/com/tduck/cloud/project/entity/struct/CascaderExpandStruct.java
@@ -25,7 +25,7 @@ public class CascaderExpandStruct {
     public static class Option {
         public Integer id;
         public String label;
-        public Integer value;
+        public String value;
         public List<Option> children;
     }
 }