Location: L'ville, GA
Check the value being used, by assigning that function to a custom focus list column.
There was an issue reported quite a while ago, where OScan was improperly interpreting some OLang functions. I *thot* it had been fixed.
Try using the "US Stocks" list for the scan. If your FL column shows a value for any symbols that is <= 1.5, and the scan does not show those symbols, you need to snapshot both screens, and bundle them with your code in a bug report.
Also it would probably be useful to show a few snaps of charts of symbols for which the plot shows <= 1.5 but the symbol does not show up in the scan.