I want to directory upload with jmeter

I m doing files upload with jmeter very well. But ı want to upload from directory but it is not work. For example ı try to like this :

------aiYHC13zS69CLqZX
Content-Disposition: form-data; name="file"; filename="Actress/tatiana maslany/30_612x344_tatiana_maslany_sarah_orphanblack.jpg"
Content-Type: image/jpeg

But jmeter comment :

------aiYHC13zS69CLqZX
Content-Disposition: form-data; name="file"; filename="_tatiana_maslany_sarah_orphanblack.jpg"
Content-Type: image/jpeg