multiple file formats in sender SFTP

Hi,

I have multiple file formats to pick.

for example:

SAPxyz_deltaDATE.xml

SAPabc_deltaDATE.xml

SAP123_deltaDATE.xml

need below

SAPxyz_delta*.xml and SAPabc_delta*.xml with one communication channel (need help here)

and SAP123_delta*.xml another communication channel (i can do this)

when i use comma for two file formats SAPxyz_delta*.xml,SAPabc_delta*.xml; the files are not picked. whats the correct way to pick two file formats with one channel?

Thanks.

Prema