Keep in mind that all variables (that are not implicitly or explicitly retained) are set to missing at the start of the data step iteration. This means that you have only missing values when you evaluate your condition. Place the SET statement first in the data step. For illustration, see these codes: data test1; if age = 13; set sashelp.class; run; data test2; set sashelp.class; if age = 13; run; ... View more

Good for you!   ... View more

Since there are only 12 months you could just write your own logic for converting month number to whatever string you want. For example you could just type out the 12 strings yourself and use %SCAN() to pick the right one. %macro german_month(date); %scan(Jan ... Dez,%sysfunc(month(&date))) %mend; Then call the macro were you want to generate that three letter string. %let varname=%german_month("&sysdate9"d)_test ;   ... View more

Thanks a lot for all your advices. You helped me a lot. ... View more