Rss downloader Filter isnt working correctly

[KoNeko]

Hi,

I have a feed where often i see files like

name[720x400].avi

name[1280x720].avi

if i want the 720x400 one i can use *1280* at not

but if i want the 1280x720 one if i fill in *720* it doesnt give any file and 720* doesnt work.

what is the best way to make a filter that it downloads the 1280 one and only that one?