Passing inputs not possible using JRA

Question

I am running SP14.
I am unable pass input values to my remotely-callable function module using JRA.  However, I can invoke a different RFM successfully and its retrieve exports--IF it doesn't require inputs.  So it seems that only passing inputs is not possible.
I have tried passing a simple field, as well as passing a structure.  Neither way works for me.
<u>1. Here is how I tried to pass a simple field:</u>
MappedRecord input =
recordFactory.createMappedRecord
("Z_GET_EMPLOYEE");
input.put("USERID", userid);
MappedRecord output = (MappedRecord) ix.execute(null, request);
The error I recieve on this is
<b>The RFM is invoked, but only a blank parameter is passed.</b>
<u>2.  Here is how I tried to pass a field in a structure:</u>
MappedRecord request =
recordFactory.createMappedRecord
("Z_GET_EMPLOYEE");
MappedRecord importstruct =
(MappedRecord) request.get("RFCINPUT");
importstruct.put("USERID", userid);
MappedRecord output = (MappedRecord) ix.execute(null, request);
The error I recieve on this is
<b>Field RFCINPUT not a member of Z_GET_EMPLOYEE</b>
Any thoughts would be very much appreciated.
Kevin

Answer 1

Here is another piece of the puzzle.
I found some coding examples and tried a few more things.
Using the same JRA technique that I have been using,<b> I can run an existing sap-delivered rfm (STFC_STRUCTURE) successfully and pass in input parameters successfully</b> using its structure (IMPORTSTRUCT)!
However, I added IMPORTSTRUCT to my new RFM, and I get the same error as before.
Why can't I pass in parameters to my RFM?
Kevin