As the title suggests, I am trying to create a system where a cell (which matches to a specific row) will search another sheet, find a number which matches its row number, and then puts in the paired value. I have attached a screenshot for a clearer picture.

This is what I have tried so far without any success.

`IF(INDEX(A2:B8,2,2)=?,____,"")`

I sort of understand the INDEX and MATCH function independently, but have no concrete understanding of how to incorporate the two for this problem. Also, I have already attempted to search google for help on this but have had difficulty even knowing what to enter as search terms, so help on that would be great as well for future problems.

[![enter image description here](https://i.stack.imgur.com/Uzgv1.jpg)](https://i.stack.imgur.com/Uzgv1.jpg)

Thanks in advance!