[otrs] usage of DynamicField values in responses

Hello List, This one is for the 3.1 hackers and developers ;) I set up several key value pairs for a DynamicField Dropdown called 'language' : key - value: --------- de - german en - english fr - french I was wondering if DynamicFields are usable within my system Responses, so I set the key 'en' for a sample ticket. http://dev.otrs.org/cvs/Kernel/System/Ticket.html says that the Tikcet Object contains this information, so I tried it out, by setting this in my Response: you speak . This works fine, but it only shows me the key: "you speak en" So, how do I get the value: "you speak english" ? Cheers, David