I would be grateful for any suggestions on what the problem is with the way I am using a date-type user system IO. It all works fine on my laptop in simulation mode but once downloaded to the touchscreen, it fails to function. The original intention was to create a "return from holiday" date which would re-awaken the heating schedules. To aid diagnosis I created a blank test page with one test component. On the test page I placed a clock component whose properties are set to display a system IO time (system IO date is not presented as an option). The system IO properties tab is set to display the status of the user-defined date-type system IO variable called "test"). I note from the the help file that the B&W touchscreen can't cope with dates before 1/1/2000. Screenshots attached below. In simulation mode on the laptop all is good. Transferred to the screen the component just displays 1/1/2000. In the original "Holiday Return Date" page, I was using the day/month/year increment/decrement button functions to change the system IO value. These buttons usually failed to change the date on the touchscreen though sometimes the date would jump to something in 2069. All worked flawlessly on the laptop. In case it's relevant I have attached the Windows XP regional date/time option dialog. Touchscreen is SC5000CTL2,WE Hardware version 1.0, Cbus firmware ver 5.1.00 Ctouch firmware ver 3.43.0 PICED 4.7.0.0 Any ideas? Phil