How to get the BPM process Instance Id of a current BPM process.

Hi Experts,

My requirement is to get the process instance id of a current running process using the BPM API.Once a process is trigerred,then through BPM API's I need to get the process instance id and further from Process Instance Id I need to get the task associated with the given process.

I tried to use the process definition manager but I am not sure what all process instance it is giving .

Please help me out on the same. Any code or syntax will be really helpfull.Any document on this will also help.

My NWDS version is 7.3.1.

Regards,

Anand