Revit :: Cost Parameter In Schedule Doesn't Work

Using Revit 2012 Architecture (64-bit) and Revit 2013  (full version, 64-bit) both gave the same problem.The problem is as follows.I have gotten a Revit file from my university and I need to make a schedule for two type of windows that consists of Family, Type, Count, Cost, and Total cost. This is not really a big deal, just add the parameters to a schedule, sort by family and type, uncheck "itemize every instance". Then create a calculated value called "total costs" with formula "cost" and type set to currency. Then in formatting go to the just created "total costs", check calculate totals and click ok.
 
Now there should be a schedule with the family, type, count, costs and total costs. But costs stays black and therefore total costs is 0,00.To my knowledge windows have a certain cost associated with them that comes from a database that has values for all structures in revit. So my guess is that database isn't there or for some reason it doesn't work.The file is 100% reliable, since my university supplied it to me and it works for others using the same version of Revit. Also this problem does not only occur with this file or just windows, the cost fields always stay blank. As mentioned the problem occurs on both Revit 2012 architecture (64-bit) and Revit 2013 (full version 64-bit).