I've done loads of V and H lookups, and never had much of a problem that I
couldn't get round.

Tried to do one today on a sheet set up by someone else, and got an error.

Got as far as =VLOOKUP(B2,Expense!A2:C50,3,
When I start to type in FALSE, as soon as I hit the F I get

"There is more than one cell with this label: F"
And it asks me which label to use... I have no idea what this is about, I
have no idea what to set it to, and if I just try cancel, Excel errors and
closes itself asking if I want to send an error report.

Can anyone help me please?