How do I set arguments to jobs in a chain.

I want to use the same program in a several of job chains.  I want to pass a different argument to each job chain.

The SET_JOB_ARGUMENT_VALUE requires a JOB name, but not which program in the job chain that the argument is associated.

The DEFINE_PROGRAM_ARGUMENT sets the default argument. Using this to set the argument does not guarantee that the program that is being started has the correct value (if 2 jobs start at the same time, a timing issue).

So, how do I pass the argument to the correct program in a job chain?

Thanks - JR