For YOUR benefit as a new LCer, you should be aware that 12g of sugar alcohols means there is another sweetener, probably maltitol or lactitol or sorbitol, as well as Splenda in that there syrup. Be aware of the serving size, as well.

Any syrup FULLY sweetened with Splenda (and WITHOUT sugar alcohols, a la ATKINS) is going to be lower than 12g of carb.

Hope this info helps!