Assuming you mean currency futures, you can either add EURM5 as a future with exchange CME, or (preferred) add EURM5.3C as an index with whatever you like for exchange (The 3C overrides the exchange and security type to be futures on cme).
TS2ki has a bug in the way it handles real-time volume for futures. Indexes are ok, and this works nicely.
Steve
ps the forex ticker is just EURUSD with exchange CFOREX, btw.