Can we store a pair value in BPM global variable section etc?

We need to design our invoice bpm rules which is based on mapping between company code and its approver. E.g. company 1101-Approver1, 1102-Approver2 etc. There are around 70 such company and its approvers pairs.

Is there a way to store such pair / combo values somewhere in fusion cloud BPM so that at run time we can fetch

1: The company code from distribution combination (This is done. This is solved.)

2: Check if that company exists in our list, then find out its corresponding Approver and assign it.

How to solve #2 ? Any pointers / suggestions are highly appreciable.