For a water meter of a building, I have associated to this onthology : dtmi:org:brickschema:schema:Brick:Water_Meter;1 and then I have made a relationship "HasPoint" to a point object (dtmi:org:brickschema:schema:Brick:Point;1). I wanted to fill in the "HasQuantity" property but I haven't found "Volume" value in the list of value. What is the best option to fill in for a point of a water meter ?

Thanks in advance,
Louis Lenoir