View Processdata and activity datafield of other user

Hi,

In our application, some of the business users should be able to view other user's process datafield data regardless of the user that the instance is assigned to and regardless of the user that's logged on.

Here logged in user is not set as the manager in active directory.

I tried using

1. K2ROM APIs which gives worklist of logged in user and the managed user (i can't use managed user as client don't want to modify the active directy).

2. K2Manager which gives worklist of all the user but it doesn't give value of all the process datafields.

Is there anyway to get worklist item of other users?

Thanks & Regards,
Paresh