[Limdep Nlogit List] Looping

[Steven Yen]

I need to program with do loops but cannot get this simple one to 
work right. Can someone help? I very much like to get both options 
(below) to work. Thanks.

calc ;k=0 $
do for ;10 ;i=1,3 $
calc; k=k+1 $
?  calc ;list ;i $ ? Had expected this to work but got an error message
    calc ;list ;k $ ? So I tried this
enddo  ;10 $

? Had expected to print 1, 2, 3 through the loop but got only 1
? Help!