Hey Wizzard78, I'm not farmiliar with the spreadsheet but at a guess it'd just be something like medium crystal malt? There are a whole heap of different crystal malts each having their own very distinct flavour/aroma/colour. Have a look at the Craftbrewer web site, all the malts with cara or crystal in the name is a crystal malt, you'll notice how many different types there are. If what you're using is in fact medium or even light crystal then I'd say go for it, I've never used dark crystal so I can't comment on how strong a flavour it has.