When you use name, you need to use ":
wManager.Wow.Helpers.ItemsManager.GetItemCountByNameLUA("Boiled Blood")
(but I don't recommand to use name, because this will work only with wow english client (if you use english name))
I think than you problem was caused by ; (you don't need to put ; at the end of conditions, if your problem is not resolved if you can share your log, you have probably errors)