SAP PI 7.31 - Sender SFTP Adapter Dynamic File Name

   Hi Experts,

I have scenario in which I am getting two fields from the source system. I have to create a File Name from those fields and Pick the same File Name from a External SFTP Server located on the target and send it back  to the source system. I am able to create the File Name from the source data but my challenge is to place that File Name into the Sender SFTP adapter.

Please let me know how can I achieve this functionality? Is there a workaround to this problem?

Thanks in advance,

Arkesh