Umango Extract's standard folder browsing feature using the zone type "Export Field" feature is excellent in most instances. However, if you want users to be able to browse and select a folder from a large folder list it can be time consuming to find the right folder. It would be nice to be able to search for it wouldn't it? Well, you can. Sort of.
To allow users to search for the folder, you need to add an ODBC lookup and use SQL to query the folder structure. You can configure it as described below:
SET NOCOUNT ON
declare @files table (subdirectory varchar(100), depth int, [file] int)
insert into @files execute xp_dirtree 'C:\my\folder\path',1,1
select subdirectory from @files where [file]=0 and subdirectory like %<SearchValue>%
Now you just need to assign your new index zone as a subfolder of the export directory.
Link to this article http://umango.com/KB?article=84