Firstly ,here is the source code :

---------------
thisform.list2.CLEAR

SELECT wname,wday FROM workday WHERE wday = date() ;
AND NOT wname="blank" INTO CURSOR tmp

SELECT tmp
FOR i = 1 to RECCOUNT()
GO i
thisform.list2.ADDITEM (tmp.wname)
endfor

RELEASE tmp
---------------
The problem is I can prove that there is no record in tmp ,but when I run the program ,it added 3 item into list2 ! HOW COME ?! It make me crazy .
Do you have any idea about that ?