I got it to work in 8.5!!!!!!!
Evidently you can't reference 2 separate fields in a suppression formula.
if A=1 and B=2 then 1 else 0 (this won't work)
So I put the compound if-then's in a single formula.
if A=1 and B=1 then 99 else
if A=1 and B=2 then 999 else
if A=3 and B=10 then 9999 else 0
Now in the suppression field I use a simple if-then.
if formulavalue = 99 then 1 else 0
On a side note, you can reference the same field twice in a suppression field.
if A=1 or A=2 then 1 else 0
I just had to think a way around the suppression limitation.