Next to the text property of the label, click on the grey cylinder.
Select the Expression radio button.
Enter the following and click OK.
dateFormat({[System]Client/System/CurrentDateTime},"HH:mm:ss")
Next to the text property of the label, click on the grey cylinder.
Select the Expression radio button.
Enter the following and click OK.
dateFormat({[System]Client/System/CurrentDateTime},"HH:mm:ss")