code ,results are as followed,   why macro varable value when compared with normal var within macro environment happends an error ?   code %macro comp; data test; do n = 1 to 5; output; end; run; data comp; set test; length k 3 d1 3 d2 3 d3 3; %do i = 1 %to 3; %if n > %eval(&i.) %then %do; k=%eval(&i.); d&i.=1; output; %end; %end; run; %mend; %comp;   expected : n k d1 d2 d3 1 1 　 　 　 1 2 　 　 　 1 3 　 　 　 2 1 1 　 　 2 2 1 　 　 2 3 1 　 　 3 1 1 　 　 3 2 1 1 　 3 3 1 1 　 4 1 1 　 　 4 2 1 1 　 4 3 1 1 1 5 1 1 　 　 5 2 1 1 　 5 3 1 1 1     but actually: n k d1 d2 d3 1 1 1 　 　 1 2 1 1 　 1 3 1 1 1 2 1 1 　 　 2 2 1 1 　 2 3 1 1 1 3 1 1 　 　 3 2 1 1 　 3 3 1 1 1 4 1 1 　 　 4 2 1 1 　 4 3 1 1 1 5 1 1 　 　 5 2 1 1 　 5 3 1 1 1 ... View more