Below is the required scenario :
Sender channel is picking two files from the directory master file and additional file having naming convention as follows:
master file : FILENAME_UNIQUENO.xml
additional file :FILENAME_UNIQUENO.pdf
This "UNIQUENO" will have different values each time the channel picks the file.
I need these files to be placed in target directory with same source name.
I tried these additional file parameters in sender channel:

But it is appending "_%F" at the end of the filename :
I also tried the module "RenameAttachmentbean" with the following parameters in module configuration:

I guess this module is not supported in SAP PO 7.5.
Is there any other alternative of "RenameAttachmentbean" or any other method which will help for the given requirement.
Thanks in advance.