Make a "BUSCARV" in a KPI

[oscargm_bi]

Hi,

I had a table like this:

[A 3, B 2, C 3, D 5, E 6]

and I need that in a KPI search the value of the letter and bring it. I mean, if in other table there is an A and I choose that letter the KPI must bring me the numer of 3.

how can i do that?

Thanks