How to add weight unit for liquid products

[jordantsap]

I have a website that sells liquid products for hair styling.
All my roducts are litre unit based so i need to configure each product with ml weight based.
I saw that there is no litre unit in core vm.
How to create one?

[AH]

unit of "L" is supported

COM_VIRTUEMART_UNIT_NAME_L="Liter"

Should be spelling of "Litre"  though.