Call a second process with an input of the States BO.
Process 1
FIND States
Process2
Process 2 Input States
IF LIRU.States IS UNDEFINED THEN LIRU.States=States.Code ELSE LIRU.States=LIRU.States+','+States.Code
Process 1 finds all the states, process 2 adds each of these one at a time. Will give you an LIRU.States that is 'AL,AK,NY'
Unless you need that state list to be in context for other processes that are unconnected you could use a non persisted BO during the process that requires the list of states. The benefits of this are that the non persisted BO never has to be cleared as it disappears after the end of the process that it is attached to, whereas you will need to reset LIRU every time that you use it.