Hello,   I'm trying to use macro %if %then; %else; for a numeric operand, and I'd appreciate if anyone could let me know how to do it. I would like to create a new variable named "status" to indicate whether it is "serious" or "moderate."   %macro Serious_Smoker(serious) /store;      %let Serious_Smoker = %upcase(&serious);    %if &PctSmokers > 35 %then        %do;           title 'Results for Serious Smoker Population (>35%)';           Status = "Serious"; run;    %end;    %else        %do;           title 'Results for Moderate Smoker Population (<=35%)';           Status = "Moderate"; run; %end; %mend Serious_Smoker; %Serious_Smoker;   I got error messages:  ERROR: A character operand was found in the %EVAL function or %IF condition where a numeric        operand is required. The condition was: &PctSmokers > 35 ERROR: The macro SERIOUS_SMOKER will stop executing.   --   Thank you very much for your help in advance! ... View more