Before transferring data with the extended functions, you must add all parameters and tables to the parameter stack.
A calling program that exports parameters ( RfcCallExt / RfcCallReceiveExt), or a called program that returns them ( RfcSendData), must add export parameters to the stack with RfcAddExportParam:
void * name,
void * addr);
These fields have the same meanings as the corresponding RFC_PARAMETER fields. (See ItInsLine)
Remember to allocate the stack space with RfcAllocParamSpace before calling RfcAddExportParam.