Okay, you need to set up an array the right way to mak this work:
DIM OUTCOME[<amount of elements>]
OUTCOME[0]="String0"
OUTCOME[1]="String1"
OUTCOME[2]="String2"
And then...
FOR Y=0 TO LEN(OUTCOME[]) #You don't need step if it's only 1 in SmileBASIC
#blah blah
?OUTCOME[Y] #[]is the array param thingy, you put the element array coordinate you want
NEXT #Definitely need this, lol