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Answers and rating deltas for

Why won't this work as an IIF function, but will as an IF Statement?

Author Votes Δ
Dan Tao 7 +1.20
Tomas Aschan 3 +0.48
wRAR 1 -1.42
Joe 1 -2.15
Last visited: Sep 14, 2014, 5:07:29 AM