Multiple items per condition

[Zanari]

Is there a way I can mail merge asking one field a question to get the merge
result from another field.

example:

field names: Set, Set 1, Set 2, Set 3, Set 4
The set field either has 1, 2, 3, or 4 and depending on that number gets the
information from that Set 1, Set 2, Set 3, or Set 4 field.
for a final result of
Set = 2 and merges the information from the Set 2 Field, no other field

I hope you understand what I am asking.
Thank you for your time
Lori