Parameter allow null value not reflecting in Deploy

Lads,
I'm having this problem where I've set each of my report parameters to Allow
Null Value, and Allow Blank Value to true...in the preview the null checkbox
is true. The problem is when I deploy my report, and view it through IE the
null checkbox is now false!? I haven't a notion of what the story is, any
info would be greatly appreciated.Do you deploy over existing report? Try to delete it from server before
deploying.
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"Rowan Massey" <RowanMassey@.discussions.microsoft.com> wrote in message
news:8F8D0F2B-E07F-4EC5-A877-5E85CD0CC432@.microsoft.com...
> Lads,
> I'm having this problem where I've set each of my report parameters to
> Allow
> Null Value, and Allow Blank Value to true...in the preview the null
> checkbox
> is true. The problem is when I deploy my report, and view it through IE
> the
> null checkbox is now false!? I haven't a notion of what the story is, any
> info would be greatly appreciated.