How to get matching criteria via SDK

Hi

Can anyone please let me know how to fetch matching criteria from a current status on workflow

For Example :

Let say available criteria are C1,C2,C3,C4 on a Status 'CCB'

if only C1 and C2 matches then it should return C1 & C2 only as it enters CCB

But what we want is
When a change moves to a given status say ‘CCB’
and on CCB it matches with one or more of several criteria available and populates the approvers/notifiers/observers
while doing this we need few fields to be automatically completed
For Example
Criteria 1 – Fields F1,F2,F3 – Approvers 1