diff --git a/server/internal/api/exports.go b/server/internal/api/exports.go
index 5b1efcd..2e7e09d 100644
--- a/server/internal/api/exports.go
+++ b/server/internal/api/exports.go
@@ -1574,3 +1574,18 @@ func pickFirst(perm map[string]interface{}, filters map[string]interface{}, keys
 	}
 	return nil, false
 }
+
+// parseIntVal 尝试将字符串解析为整数，失败返回-1
+func parseIntVal(s string) int {
+	if s == "" {
+		return -1
+	}
+	n := 0
+	for _, c := range s {
+		if c < '0' || c > '9' {
+			return -1
+		}
+		n = n*10 + int(c-'0')
+	}
+	return n
+}