Richard,
I'm not sure if this if causing your problem or not, but sometimes in Excel (and, I suspect, also in Financial Reporter) a division operation returns trailing amounts (as in 9/3=3.00000000000000012). Of course, this is not zero, so the "suppress when zero" test fails.
You can see if this is the problem by changing the formula to something like, ROUND(F33/F50,2).
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Ralph Allan
Business Computer Centre
Prince George BC Canada