diff --git a/src/Automation/Automation/ChangeLog.md b/src/Automation/Automation/ChangeLog.md
index ab5b36fed5a8..7b647cb94bfa 100644
--- a/src/Automation/Automation/ChangeLog.md
+++ b/src/Automation/Automation/ChangeLog.md
@@ -18,6 +18,7 @@
         - Additional information about change #1
 -->
 ## Upcoming Release
+* Fixed the issue that string cannot be serialized correctly. [#14215]
 * Added Support for Python3 Runbook Type
 
 ## Version 1.4.3
diff --git a/src/Automation/Automation/Common/PowershellJsonConverter.cs b/src/Automation/Automation/Common/PowershellJsonConverter.cs
index 1504b514c58d..8150c8e37027 100644
--- a/src/Automation/Automation/Common/PowershellJsonConverter.cs
+++ b/src/Automation/Automation/Common/PowershellJsonConverter.cs
@@ -36,7 +36,7 @@ public static string Serialize(object inputObject)
             }
             if (inputObject is string @str)
             {
-                return str.Trim();
+                return JsonConvert.SerializeObject(str.Trim());
             }
             else if (inputObject is object[] @objectArray)
             {