ABAP in Process Chains

Question

I am trying to run an ABAP from a process chain and need some of the information from the process chain itself.  The documentation on ABAPs in process chains includes the following:
Using the Program variant you can transfer the Process variant to the program at the time of scheduling. Input the Process variant as a value for the Program variant and add the following lines to your program:
PARAMETERS variant TYPE rspc_variant.
The system exports the technical name of the latest process chain, as well as the dynamic parameter Instance and Log ID in the shared buffer.To receive this parameter, add the following lines to your program:
DATA: l_instance TYPE rspc_instance,
      l_logid    TYPE rspc_logid,
      l_chainid  TYPE rspc_chain.
IMPORT instance TO l_instance
       log_id   TO l_logid
       chain_id TO l_chainid
       FROM DATABASE BUFFER rspc_buffer(ab)
       ID variant.
Can anyone explain how to "Using the Program variant you can transfer the Process variant to the program at the time of scheduling. Input the Process variant as a value for the Program variant"
Thanks very much,

Answer 1

Hi,
We have a similar requirement where we want to pass the  values of a program into an ABAP program being used in a process chain. For e.g the Program 1 has values entered by the user and we want to make use of those values in Program 2.Program 2 is used in the process chain. Program 1 triggers a process chain. We wanted to make use of following program and we got a syntax error for the "DATABASE BUFFER" statement.
PARAMETERS variant TYPE rspc_variant.
DATA: l_instance TYPE rspc_instance,
l_logid TYPE rspc_logid,
l_chainid TYPE rspc_chain.
IMPORT instance TO l_instance
log_id TO l_logid
chain_id TO l_chainid
FROM DATABASE BUFFER rspc_buffer(ab)
ID variant.
Any help is appreciated.
Thanks.