diff --git a/examples/Actor/DemoActor/DemoActor.cs b/examples/Actor/DemoActor/DemoActor.cs
index 19d30cc92..8e1cfe975 100644
--- a/examples/Actor/DemoActor/DemoActor.cs
+++ b/examples/Actor/DemoActor/DemoActor.cs
@@ -41,12 +41,12 @@ public DemoActor(ActorHost host, BankService bank)
             this.bank = bank;
         }
 
-        public async Task SaveData(MyData data)
+        public async Task SaveData(MyData data, int? ttlInSeconds = null)
         {
             Console.WriteLine($"This is Actor id {this.Id} with data {data}.");
 
             // Set State using StateManager, state is saved after the method execution.
-            await this.StateManager.SetStateAsync<MyData>(StateName, data);
+            await this.StateManager.SetStateAsync<MyData>(StateName, data, ttlInSeconds: ttlInSeconds);
         }
 
         public Task<MyData> GetData()
@@ -100,7 +100,7 @@ public async Task ReceiveReminderAsync(string reminderName, byte[] state, TimeSp
             // This method is invoked when an actor reminder is fired.
             var actorState = await this.StateManager.GetStateAsync<MyData>(StateName);
             actorState.PropertyB = $"Reminder triggered at '{DateTime.Now:yyyy-MM-ddTHH:mm:ss}'";
-            await this.StateManager.SetStateAsync<MyData>(StateName, actorState);
+            await this.StateManager.SetStateAsync<MyData>(StateName, actorState, ttlInSeconds: 360);
         }
 
         class TimerParams
@@ -164,7 +164,7 @@ public async Task TimerCallback(byte[] data)
         {
             var state = await this.StateManager.GetStateAsync<MyData>(StateName);
             state.PropertyA = $"Timer triggered at '{DateTime.Now:yyyyy-MM-ddTHH:mm:s}'";
-            await this.StateManager.SetStateAsync<MyData>(StateName, state);
+            await this.StateManager.SetStateAsync<MyData>(StateName, state, ttlInSeconds: 360);
             var timerParams = JsonSerializer.Deserialize<TimerParams>(data);
             Console.WriteLine("Timer parameter1: " + timerParams.IntParam);
             Console.WriteLine("Timer parameter2: " + timerParams.StringParam);
diff --git a/examples/Actor/IDemoActor/IDemoActor.cs b/examples/Actor/IDemoActor/IDemoActor.cs
index adec6df68..af24b7d03 100644
--- a/examples/Actor/IDemoActor/IDemoActor.cs
+++ b/examples/Actor/IDemoActor/IDemoActor.cs
@@ -1,4 +1,4 @@
-// ------------------------------------------------------------------------
+// ------------------------------------------------------------------------
 // Copyright 2021 The Dapr Authors
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -27,8 +27,9 @@ public interface IDemoActor : IActor
         /// Method to save data.
         /// </summary>
         /// <param name="data">DAta to save.</param>
+        /// <param name="ttlInSeconds">Optional TTL in seconds.</param>
         /// <returns>A task that represents the asynchronous save operation.</returns>
-        Task SaveData(MyData data);
+        Task SaveData(MyData data, int? ttlInSeconds = null);
 
         /// <summary>
         /// Method to get data.