Scene won't show up at all

This scene isn’t appearing in my script at all.
Help?

EXT. CITY HIGHWAY LOOP - DAY with CAR SIDE PURPLE
@EX 1 changes into EX 1 casual 2
@EX 1 stands screen center AND EX 1 faces right
@WYNDELL stands screen left AND WYNDELL faces right

What is EX 1? Maybe that is the problem.

Thank you! It worked!