Dynamic Config issue

Hi All,

I have an IDOC to Flatfile scenario. The IDOC is MATMAS. The E1MARCM segment in the IDOC repeats multiple times corresponding to the data. Suppose the IDOC has 4 E1MARCM segments then it has 4 WERKS fields and hence has data corresponding to 4 Plants in a single IDOC. The value in WERKS represents a PLANT.

I have to generate 4 flat files corresponding to each PLANT and route each flat file to the Folder corresponding each PLANT.

The constraint that I have is that I can not use Variable Substitution as the WERKS field is NOT mapped to any field on the target side. I tried using Dynamic Config but I am unable to do so as Multiple Files are getting generated.

Please help.