Dynamic File name based on Input field....

Greetings,

How can we set the Ouput file name based on the Input message field for file adapter?

with ASMA we can use the input file name or timstamps but is there a way to naming the file based on input message fields without passing that vale to the target message?

For Variable Substitution , Is it necessary to pass the value to the target field?

Thanks & Regards,

Hitesh