HVORFOR KAN JEG IKKE SLETTE DISSE COOKIES ?

Jeg skal have nogle værdier fra min db smidt over i nogle cookies. Det går fint nok med den kode jeg har nu.....men når jeg så skal slette den enkelte cookie igen....det kan jeg IKKE !..hvorfor ?

***** db to cookie ******
kundenr=11111111
pw=\"xxx\"
   
sql = \"select * from Costumer where Username=\"&kundenr &\"and Password =\"&\"\'\"&pw&\"\'\"
set rs = conn.execute(sql)
do while not RS.EOF

ordernr = RS(\"Orders\")
       
RS.movenext
loop
       
cv=1       
sql = \"select * from Orderline where Orders= \"&ordernr
set rs3= conn.execute(sql)
do while not RS3.EOF
cv=cv+1
RS3.movenext
loop

       
for each thing in Request.Cookies   
cook=cook+1       
next

i=1
sql = \"select * from Orderline where Orders= \"&ordernr
set rs2 = conn.execute(sql)
do while not RS2.EOF
       
pid = RS2(\"ProductNr\")
unit = RS2(\"Unit\")
bid = RS2(\"Options\")
ny = RS2(\"Neww\")
       
if cook  =\"\" then
response.cookies(\"pid\"&i) = pid
response.cookies(\"unit\"&i) = unit
response.cookies(\"bid\"&i) = bid
response.cookies(\"ny\"&i) = ny
       
end if
       
if not cook=\"\" then
response.cookies(\"pid\"&cook+i) = pid
response.cookies(\"unit\"&cook+i) = unit
response.cookies(\"bid\"&cook+i) = bid
response.cookies(\"ny\"&cook+i) = ny
end if
       
i=i+1
RS2.movenext
loop   

********* Slet cookie *******

z=1
for each thing in Request.Cookies   
if request.cookies(\"pid\"&z) = pid then
response.cookies(\"pid\"&z) = \"\"
response.cookies(\"unit\"&z) = \"\"
response.cookies(\"bid\"&z) = \"\"

response.cookies(\"pid\"&z).expires = \"Jan 1, 1999\"
end if

z=z+1
next