Chart in Excel XP doesn't refresh
 

Hi, my problem is that I have charts that work fine under Excel 2000
and don't show anything under Excel XP. The sheets are all password
protected and the charts get their data from a hidden sheet (xlSheet
very hidden). F9 doesn't work and application.calculate doesn't work,
too in VBA. Other charts on other sheets in the same workbook work
fine, though.
What's wrong?
I appriciate every help, thank you in advance.

Christian Meyer
social-interface.com