I've got a very simple Vlookup function that is giving me a problem. I am
trying to find a match to a number, but can only get the match to work if I
enter an apostrophe (') before the number (found in C22) and make it a text.
I've checked that both the source cell and the searched cells are formatted
to identical number format.

=VLOOKUP(C22,Prices,2,FALSE)

"Prices" is a sheet in a second externally linked workbook.

Thanks