Hi, I know for a fact that I am over thinking this problem but I still need help. I am new with quest so it might be something I am not understanding about its features. This isn't really a question about the code just about quest's features as I run into the same problems with the "make exit invisible" script also. here is some code to get the gist;

if (Got(car key)) {
  UnlockExit Parking lot
}
else {
  LockExit Parking lot
} 

I assume the code is actually:

if (Got(car key)) {
  UnlockExit (Parking lot)
}
else {
  LockExit (Parking lot)
} 

and Parking lot is the name of an exit?

Where are you putting this script?