COBOL .NET Call programs in a different folder

This pertains to the use of external filehandlers, where my COBOL class is compiled with CALLFH"abcdef", which in tern needs to call fh/aaaaaa.dll which exists in the sub folder fh.

The COBOL has :

CALL “fh/aaaaaa” using ………

During animation I debug the class, debug abcdef, but when it gets to the CALL “fh/aaaaaa” it doesn’t raise an exception but doesn’t execute the code either.

I can see from procmon that the assembly was indeed loaded as well as the .pdb but just ignored almost as though it was looking for the programid but that didn’t match.

Is this not supported?
Is there an COBOL .NET  replacement for COBPATH ?

Neil