Let me try once again. I have a form which has a pageframe and few textboxes and a GRID. I have put "set filter to command" to a table, which is main table, for this form. This GRID object has the records , which are result of filter expression. Grid becomes visible only when user click help like button.

Now the problem : The area below this grid has few text box objects. Grid is over top it it (Grid.zorder=0). But grid is invisible by default. Now when I click any button which causes form object(s) refresh (and grid is still invisible), I get exactly same area disturbed which is overlapped by grid.

What could be the problem.

Hope this time it is much clear.