SFTP receiver adapter change attachment file name at the target side

Hi Experts,

Currently i am picking multiple files using additional files option in sender SFTP adapter and i am writing both main payload and attachment in target directory using receiver SFTP adapter by using 'store attachments' option in receiver channel, by default channel is creating attachment file name like MainPayloadFileName_AttachmentFileName, Can we create the file name only with AttachmentFileName instead of adding MainPayloadFileName??

Please suggest me if you anyone done this before?

Regards,

Rachana.