Fileattribute 8224

hi,  i found file attribute  8224 in pfc_n_cst_filesrv when running pb8 application on win8 envrionment.

we have function using of_dirlist to get pdf files from directory and check if older than 3 hours then delete.

however the function only return todays files.

i have checked the file atribute list, there is no such number,  just want to know what it means?

thanks