Update Label Control On Slide Load

I am sure there is a very simple solution for this and I just can't find it. I have a PowerPoint presentation that will continuously run day after day on a large LCD monitor for our employees. I used a label control to show how many days we have operated without incident. As you can see the last date there was an accident was on 11/9/2006.

Code:

---

Label1.Caption = DateDiff("d", #11/9/2006#, Date)

---

How can I get the slide with this information to update the label every time it loads? The only events I see for the label all require some sort of user intervention. (Click, Double-Click, ect...) I was looking for an event like onload that can trigger the updating of the label.

Thanks,

Andy Zamborsky