Process Monitoring and Capture Variable Data

[Mark Bullathsinghalage Cooray]

Hi all,
 
May I know if there is a way to get variable information and the invocation 
information within a BPEL process.
 
Example: 
 
I have deployed a Booking service, a user send a payload of booking info as an 
input. I need to know what happen to this Input, where does it go and how the 
out put came which activities got involved and even activities inputs and 
outputs.
 
====
 
I used BpelEventListener and for a lot of information but it does not tell me 
the variable information and the invocation data.
 
Can I know is there a way that I can use any API from ODE?
 
Regards,
 
Mark.