SETW / TP v6 manipulate WFWG Environment Vars

Using TP v6, I have use TPEnv from Turbo Power to manipulate environment
variables to be visible by a batch file when the TP program exits. THis doesn't
work in WFWG dos boxes. I tried EXEC'ing SETW.Exe, still doesn't work. Can I
make it work somehow?

Thanks,
Roger