Adding a new value to your lookup file

In order to add values, first you have to see if they exist in your lookup file.  So, open up your CITY.LUS file by going to the UTILITIES / EDIT CONFIG FILES / LOOKUPS / EDIT menu options, and scroll down or search to find that table associated with the field, in this case were looking for VEH1DIR and VEH2DIR.  Notice that there is no value for U or Unknown.

VEH1DIR

 1 North

 2 South

 3 East

 4 West

So, add a number 5 (the number can be any number less than 255 as long as it's not being used) and add the lookup for 5 to be Unknown.  Also be sure to add the value to the corresponding VEH2DIR field.

VEH1DIR

 1 North

 2 South

 3 East

 4 West

 5 Unknown

Save the file by going to the File / Save menus.