Dear Experts

The following command do nothing and curosr seems to be working for a long time.
Please make some changes to work

SELECT vou_sum
GO top
DO while !eof()
	AA=date 		&& date type
	bb=VOU_NO 	&& numueric type
	cc=ALLTRIM(VOU_TYPE)&& character type
	dd=d1
	
	SELECT VOUCHERS
	LOCATE for date=AA and VOU_NO=bb and VOU_TYPE=cc
	DO while FOUND()
		REPLACE d1 WITH dd
	ENDDO

	SELECT vou_sum
	Skip
ENDDO