Here's a good tip, before posting a question take a peek into help,
Here's a quote

"Important The values in lookup_vector must be placed in ascending order:
....,-2, -1, 0, 1, 2, ..., A-Z, FALSE, TRUE; otherwise, LOOKUP may not give
the correct value. Uppercase and lowercase text are equivalent."



If you look at yours you can see that the values are not in ascending order




--


Regards,


Peo Sjoblom



"Daniel" wrote in message
...
why lookup is not working and returning #N/A ? thanks

doing :
=LOOKUP(PRET,G4:G13,F4:F13) on the range below,
the result should be 990, it works only for the first 8 items in the
lookup
array

PRET

990 SIM1
990 SIM2
990 SIM3
990 SIM4
990 SIM5
990 SIM6
990 TLOW
990 THIGH
990 PRET
990 POST