Criteria Section Screen Correction

hi,

I have one doubt , while generating the report we are giving the DataSource name ,Which field, then values we are choosing in that value lookup how to add one more value .

Ex: In Table -inventdim -,Filed-InventSite ,Value choosing time we will click the down arrow at the timeit will lookup Site id ,Description will come at that time i have to show one more column like State.

How to do in this modification.

Thanks

Palani