This works: // filter results var list = this.listResults.result.row.select(function(row) { return (row.sess == self.resultsFilter.session || self.resultsFilter.session == null) && (row.level == self.resultsFilter.level || self.resultsFilter.level == null) && (row.div == self.resultsFilter.division || self.resultsFilter.division == null); }); Not certain why former example did not work. I'll stick with the latter, but still curious about the issue with the former. Karl..
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