//This example creates a new icon set rule and sets the range and icon for it.
activeSheet.setValue(0,0,1,3);
activeSheet.setValue(1,0,15,3);
activeSheet.setValue(2,0,25,3);
activeSheet.setValue(3,0,-1,3);
var iconSetRule = new GC.Spread.Sheets.ConditionalFormatting.IconSetRule();
iconSetRule.ranges([new GC.Spread.Sheets.Range(0,0,4,1)]);
iconSetRule.iconSetType(GC.Spread.Sheets.ConditionalFormatting.IconSetType.fourTrafficLights);
var icons = iconSetRule.icons();
icons[0] = {iconSetType: GC.Spread.Sheets.ConditionalFormatting.IconSetType.fiveArrowsColored, iconIndex: 1};
icons[1] = {iconSetType: GC.Spread.Sheets.ConditionalFormatting.IconSetType.fiveArrowsColored, iconIndex: 2};
icons[2] = {iconSetType: GC.Spread.Sheets.ConditionalFormatting.IconSetType.noIcons, iconIndex: 0};

var iconCriteria = iconSetRule.iconCriteria();
iconCriteria[0] = new GC.Spread.Sheets.ConditionalFormatting.IconCriterion(true, GC.Spread.Sheets.ConditionalFormatting.IconValueType.number, 1);
iconCriteria[1] = new GC.Spread.Sheets.ConditionalFormatting.IconCriterion(true, GC.Spread.Sheets.ConditionalFormatting.IconValueType.number, 10);
iconCriteria[2] = new GC.Spread.Sheets.ConditionalFormatting.IconCriterion(true, GC.Spread.Sheets.ConditionalFormatting.IconValueType.number, 20);
iconSetRule.reverseIconOrder(false);
iconSetRule.showIconOnly(false);
activeSheet.conditionalFormats.addRule(iconSetRule);