>When adding a view parameter to view associated with bizobjmaintenanceform, I use a combobox to requery the view. The problem is the highlightbar is not set once the view is requeried. If I try setting it manually, although there is a highlightbar, the user can't navigate anywhere on the page. I have validated that lockscreen = .f. and cursor is on. Anybody have any suggestions?

Look up the documentation on SetFocusToFirst() on container classes, this will handle the highlight bar problem smoothly but I think you'll have to go with a different form class and roll your own maintenace style grid deal. HTH