Hi,
If you use the OOB Execute PAM process Macro only the persid of the cr object will be passed to the PAM process.
This is in fact a strong design limitation that I have never understand.
To go around that you will have to create your own macro that will execute a Web Services call to the PAM process.
With this approach you will be able to pass any parameters you like to PAM.
Not really difficult but this will require you to have some spel knowledge and be out of support from CA.
My 2 cents
/J