SFTP multiple csv files issue

Hello,

I am trying to load multiple csv files into data service from a remote machine using sftp. But its not picking all the files and the flat file's file name attribute is expecting an exact name for picking the file. If i try to use wildcard ('*'), its failing. Any pointers to resolve this issue will be very helpful.

Note: I am using DS 14.2.8.1354 in a windows server.