Does anyone know why I get this note: NOTE: Character values have been converted to numeric values at the places given by: (Line):(Column). 6752:4 6756:4 6768:4 6886:4 Here is the code I am using (copied and pasted from my log): 6747 if not (nonmedli1=' ' and nonmedli2=' ' and nonmedli3=' ') then do; 6748 6749 array thchange (3) nonmedli3 nonmedli2 nonmedli1 ; 6750 do i=1 to 3; 6751 nonmedli=' '; 6752 if thchange(1) then do; 6753 if thchange(1)=' ' then nonmedli=' '; 6754 else nonmedli=nonmedli3; 6755 end; 6756 if thchange(2) then do; 6757 if thchange(2)=' ' then do; 6758 if nonmedli ne ' ' then do; 6759 retain nonmedli; 6760 end; 6761 else nonmedli=' '; 6762 end; 6763 if thchange(2) ne ' ' and nonmedli=' ' then nonmedli=nonmedli2; 6764 else if thchange(2) ne ' ' and nonmedli ne ' ' then do; 6765 retain nonmedli; 6766 end; 6767 end; 6768 if thchange(3) then do; 6769 if thchange(3) ne ' ' and nonmedli=' ' then nonmedli=nonmedli1; 6770 else if thchange(3) ne ' ' and nonmedli ne ' ' then do; 6771 retain nonmedli; 6772 end; 6773 else if thchange(3)=' ' then nonmedli=' '; 6774 end; 6775 end; 6776 6777 end; Can anyone explain? Can I prevent the error message from occuring for the code above, and how? Thanks and best regards, Doro _________________________________________________________________ Watch “Cause Effect,” a show about real people making a real difference. Learn more. http://im.live.com/Messenger/IM/MTV/?source=text_watchcause