--- mstools/samples/rpc/hello/hello.idl	2018/08/09 18:20:55	1.1
+++ mstools/samples/rpc/hello/hello.idl	2018/08/09 18:24:13	1.1.1.3
@@ -1,8 +1,12 @@
-[ uuid (12345678-1234-1234-1234-123456789ABC),
+[ uuid (906B0CE0-C70B-1067-B317-00DD010662DA),
   version(1.0),
-  pointer_default(unique)]
+  pointer_default(unique)
+]
 interface hello
 {
-void HelloProc([in, string] char * pszString);
+
+void HelloProc([in, string] unsigned char * pszString);
+
 void Shutdown(void);
+
 }