RE: calling managed from native

In scenario 1 you are doing:

    set passed-to-program2                     to type Environment::CommandLine.

    accept passed-to-program2                  from command-line.

where you should only be doing

    set passed-to-program2                     to type Environment::CommandLine.

the accept statement is overriding the value that is coming in from the set statement so remove the accept any then you should see the value that is being passed.