Interface FTP to FTP without integration repository - Edit Destination File

Hello guys,

I created interface FTP to FTP without  integration repository, the interface is ok but now, I need know if is possible to create the file of destination like this:

Input File:

GYLABRS_RH_ADPxGY_OUT_PYRB0653_20130205_203046_001.txt

output file:

PYRB0653_20130205_203046_001.dat

It´s possible? If yes, how can I do that?

Thanks a lot.

Felipe