[FX.php List] help; Sort within a found set

[biscuit technologies (gmail)]

Hello,
This seems very basic and I'm just blank on how to fix it, so I  
apologize if this is dumb.

I've got fx.php hitting my db and performing finds and it works (all  
more or less simple modifications to the book example).

In the results table I am able to find within the query and filter the  
resultset, but when I use a link to sort within the found set I get an  
"&FXuser=&FXpass=" appended to my query just before the "&-find"

the link code I'm using is also more or less directly from the example  
file:
<a href="databases.php?currentSort=Vendors_ALL_by_Database::Vendor<? 
php echo $currentSearch; ?>">Vendor</a>

It seems like it's losing the $key in the link between the filtered  
search results.
When I do a search I get "currentQuery" as my $key and then when I  
click on the link to sort within the search the value for $key = FXpass

Searching works, sorting works. Sorting after a search doesn't work.

Any pointers for me?

Thanks,
David