Minor changes to RtdClocks sample

Author: govert

RtdClocks/RtdClock-IExcelObservable/ExcelObservableClock.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.Threading;
 using ExcelDna.Integration;
 
@@ -40,6 +41,7 @@ public ActionDisposable(Action disposeAction)
             public void Dispose()
             {
                 _disposeAction();
+                Debug.WriteLine("Disposed");
             }
         }
     }

RtdClocks/RtdClock-IExcelObservable/RtdClock.cs

@@ -5,10 +5,10 @@ namespace RtdClock_IExcelObservable
     public static class RtdClock
     {
         [ExcelFunction(Description = "Provides a ticking clock")]
-        public static object dnaRtdClock_IExcelObservable()
+        public static object dnaRtdClock_IExcelObservable(string param)
         {
             string functionName = "dnaRtdClock_IExcelObservable";
-            object paramInfo = null; // could be one parameter passed in directly, or an object array of all the parameters: new object[] {param1, param2}
+            object paramInfo = param; // could be one parameter passed in directly, or an object array of all the parameters: new object[] {param1, param2}
             return ExcelAsyncUtil.Observe(functionName, paramInfo, () => new ExcelObservableClock());
         }
     }