Not 100% sure I understand what is going on here.
If your INDEX has more than one row and column, you will need INDEX MATCH MATCH instead of INDEX MATCH.
If you are trying to retrieve a column and compare it with your FV6:FV34 column, you can try something like this:
=FILTER(GE6:GE34,FV6:FV34=INDEX(FT6:GA34,0,MATCH("UGW2800",FT6:GA6)))
If you want, you can email your example.
Br,