Return error message in proc Proc FCMP with colored font

[statistician13]

Is there a good way to do error handling in proc fcmp and throw an error message to the SAS log in red font?  

The only way I have been handling error messages in fcmp is by doing something like this:

if lettercase not in("U", "L") then do;
     put  "ERROR The second argument to the letters function must be one of U, u, L, or l."; 
     return(-1);
end;

but this only writes the message to the log in standard black font.  I want the font to mirror the SAS system error messages.  Also, is there a preferred or specific value I shoudl be returning for errors?

Thanks.

[Tom · Accepted solution]

Why didn't you include the colon?

[statistician13]

Ahhh.  Thanks.  I didn't realize I simply had to put in a colon.  That worked!