Add a column in the grid in kinetic

Hello,
i added a grid and map to JobMtl view.
now, I want to add a new column and this column value is if runqty from 0-10 then display A, if runqty from 11-20 then display b, if runqty from 21-30 then display c.

any idea how to do it in Kinetic, i tried the rule but it doesn’t display.

thanks,
Eddy