Create Site Scope using FAST Query SSA for Search Application

Hi,

I have a Search Drop Down site scope named 'testdev'.. I wanted it to query documents on http://communitiesdev.aol.com/sites/TestSiteforSupportTeams/TestDocLib/ document library. I run this command in SP PS as admin:

$scope = Get-SPEnterpriseSearchQueryScope -SearchApplication "Fast Query SSA" -Identity "testdev" -url "http://communitiesdev.aol.com/sites/TestSiteforSupportTeams"
$scope.Filter = 'site:("http://communitiesdev.aol.com/sites/TestSiteforSupportTeams/TestDocLib/")'
$scope.Update()

Then I checked the UI, saw status of my 'testdev' site scope "Modified - Ready on next Update".

After a couple of minutes, the status is 'READY' and the document count is '0' (which I believe is acceptable since my search is FAST and not sharepoint search)..

I tried 'testdev' in search drop down, and search for the document 'Test' (which is by the way crawled already).. The problem is it doesn't return the result, thus the message says:

"SCOPE IN YOUR QUERY DOES NOT EXIST"

here is the URL of search result page: http://communitiesdev.aol.com/Search/Pages/Results.aspx?k=test&s=testdev

Your help is appreciated.

Thanks,

Fran