Archiving files with orginal file name using SFTP Sender Channel

Hi Experts,

We are trying to arhcive files in a sender system using the "Archive files on SFTP sender "option available in SFTP Sender Channel under advanced mode.We are using ASMA to get Filename dynamically .We have given the path also for archiving.

The problem is we are able to archive the files but when only with .txt being appended to orginal filename.

For eg

If we are picking files 123.xml,345.xsl the files are getting archived in archive folder as 123.xml.txt ,345.xsl.txt. We want it as 123.xml ,345.xsl only .

Please suggest how to go ahead with the issue

Thanks

Swathi