OpenLab Custom Report simple If statement result missing

I'm using a custom report to determine the total area of peaks in a filtered list then determine if that total area is < an integer. This works for several of my samples, but the last one in the report (screenshot below) is missing the string. Any idea why it isn't displaying the result?

Label: Total RS Area

Value: TotalRSArea : =SUM(Peak_Area)

Label: Pass/Fail


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