Multiple receivers using Variable Substitution

Hi,

I have a File to File scenario with no mapping involved. A file from a single source has to be sent to one of the 4 receiver locations based on the source file name. How do i achieve this using Variable Substitution or any other method ?

I do not prefer to create 4 receiver communication channels for receiving the data, since it will be complicated when i need to add more receivers.

Your help would be appreciated !