I assume you have an FAA licence. You will need to check with the FAA for the authoritative answer, but in general simulator hours may only be logged in the specific simulator section of your logbook. There are certain exceptions for those undergoing zero-flight-time training - which you presumably were not, nor, I assume, do you hold a rating or were being instructed on the aircraft type which was being simulated. If that is the case, under UK rules I'm pretty sure that you would not be able to log the time in any pilot capacity at all. Whether that is also true under FAA rules, I can't say.
As a general rule, be very careful about logging simulator hours - particularly in an attempt to make your flying hours look greater than they really are. A simulator is not an aircraft, and, for most purposes, simulator hours may not be logged as aircraft hours.
scroggs