请教一下各位大神，我创建了宏变量，但是却引用不了是怎么回事呢？


%macro count(where=,ord=);

proc sql noprint;
    select count(distinct a) into : p3&ord. from test where &where. and c=1 ;
    select count(distinct a) into : p4&ord. from test where &where. and c=2 ;
quit;
%mend;

%count(where=b=1,ord=m);

%put &p4m;


log 显示说：
%put &p4m;
WARNING: Apparent symbolic reference P4M not resolved.


我把macro中的noprint去掉，是会正常显示宏变量的值。但是我用 %put语句，log却显示 not resolved....
只能请教各位了。