Retreiving the file names from directory inside another directory from application server

Hi,

I had a problem in retreiving the file names from a directory inside another directory.

I tried using the FM's  SUBST_GET_FILE_LIST, RZL_READ_DIR_LOCAL and EPS_GET_DIRECTORY_LISTING

But here I am getting only one directory details.

Actually my file is located a directory inside one more directory and one more directory and inside the files are located.

i.e total 3 directories inside the 3rd one my files are there.

I need to read the latest file name in the directory.

So that i can do some manipulation after getting the file name.

Is there option like OPEN DATASET , READ DATASET and CLOSE DATASET?

Can anyone please let me know How can i acheive this one.

Regards

Ram