var rule = new GC.Spread.Sheets.ConditionalFormatting.ScaleRule();
rule.ranges([new GC.Spread.Sheets.Range(0,0,20,1)]);
rule.ruleType(GC.Spread.Sheets.ConditionalFormatting.RuleType.twoScaleRule);
rule.minType(GC.Spread.Sheets.ConditionalFormatting.ScaleValueType.number);
rule.minValue(1);
rule.minColor("Yellow");
rule.maxType(GC.Spread.Sheets.ConditionalFormatting.ScaleValueType.number);
rule.maxValue(50);
rule.maxColor("Blue");
activeSheet.conditionalFormats.addRule(rule);
activeSheet.setValue(0,0,1,3);
activeSheet.setValue(1,0,45,3);
activeSheet.setValue(2,0,75,3); 