diff --git a/Runtime/GuruAnalytics/Runtime/Script/Impl/AnalyticsAgentStub.cs b/Runtime/GuruAnalytics/Runtime/Script/Impl/AnalyticsAgentStub.cs
index 9f64992..8be182e 100644
--- a/Runtime/GuruAnalytics/Runtime/Script/Impl/AnalyticsAgentStub.cs
+++ b/Runtime/GuruAnalytics/Runtime/Script/Impl/AnalyticsAgentStub.cs
@@ -109,7 +109,7 @@ namespace Guru
 
                             int idx = 0;
                             if (t == "i" || t == "d") idx = 1;
-                            var v = p[1].Replace("\"", "").Replace("{", "").Replace("}", "").Substring(idx, p[i].Length - idx);
+                            var v = p[1].Replace("\"", "").Replace("{", "").Replace("}", "").Substring(idx);
 
                             
                             // 字符串解析