     var SIValues: [Dictionary<String, Dimension>] {
         return [["Milliliters": UnitVolume.milliliters],
                 ["Deciliters": UnitVolume.deciliters],
-                ["Liters": UnitVolume.liters]]
+                ["Liters": UnitVolume.liters],
+                ["Cubic Meters": UnitVolume.cubicMeters]]
     }
 
     var imperialValues: [Dictionary<String, Dimension>] {


    var SIValues: [Dictionary<String, Dimension>] {
        return [["Square Meters": UnitArea.squareMeters],
                ["Hectares": UnitArea.hectares],
                ["Square Kilometers": UnitArea.squareKilometers]]
    }

                ["US fluid Ounces": UnitVolume.fluidOunces],
                ["US liquid Cups": UnitVolume.cups],
                ["US liquid Pints": UnitVolume.pints],
                ["US Quarts": UnitVolume.quarts],
                ["US liquid Gallons": UnitVolume.gallons],
                ["Cubic Feet": UnitVolume.cubicFeet],
                ["Imperial Teaspoons": UnitVolume.imperialTeaspoons],
                ["Imperial Tablespoons": UnitVolume.imperialTablespoons],
                ["Imperial fluid Ounces": UnitVolume.imperialFluidOunces],
                ["Imperial Pints": UnitVolume.imperialPints],
                ["Imperial Quarts": UnitVolume.imperialQuarts],
                ["Imperial Gallons": UnitVolume.imperialGallons]]
    }

