iif() bug?

Am running rlib 1.3.2. 

In my xml, I'm using iif() to determine whether I should output a field's
value in one column or the other, depending on a value in another field.  In
other words, I've got in the two columns a <field> tag similar to the
following:

<field value="iif(ps_array.CSENS=='A', ps_array.SumQTFDP, ' ')" width="5"
col="1">
<field value="iif(ps_array.CSENS=='V', ps_array.SumQTFDP, ' ')" width="5"
col="2">

What I'm noticing is in the first line of the generated report, in the
correct column, it prints out "SumQTFDP".  Then subsequent values down the
rows show the corresponding value for the previous row.  It's as if the
numbers are shifted down a row.  




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