I wanted to use the lookup function to get a numerical value with
reference to my lookup value, which is a text entry. For the setup of
my spread sheet, I could not use vlookup or hlookup. This lookup
function gave me some correct values, but mostly incorrect ones. The
following is my command:

=LOOKUP(DL2,$AV2:$BL2,$BM2:$CC2)

I checked the lookup value and the lookup vector... they are exactly
the same without spacing or spelling errors. Since I got some correct
values and some incorrect ones, I suspected that the lookup function
does not work for text entry. Am I right? Is there any way that I can
fix the problem? Please advice.

Thanks.