problem in using select-when

[RW9]

You can use the {i} above your post to post in code retaining the formatting.  Code readability is very important:

libname l '/folders/myfolders';

data carselect;
 set sashelp.cars;
 length country $10;
 select(make);
 when("Audi") country="USA";
 otherwise country="other";
 end;
run;

Audi are german by the way 🐵