Tal i database string

hey.!
når jeg skriver følgende:

times = split("01,08,12,16,20", ",")
for each post in times

if post < 08 then
  post2 = post + 7
  sql = "select count(*) as timecount from visits where dato like '"& date &"' and hour between '"& post &"' and '"& post2 &"'"
else
  post2 = post + 4
  sql = "select count(*) as timecount from visits where dato like '"& date &"' and hour between '"& post &"' and '"& post2 &"'"
end if
       
set rs = conn.execute(sql)
next

så får jeg følgende fejlkode:

Fejltype:
Microsoft OLE DB Provider for ODBC Drivers (0x80040E07)
[Microsoft][ODBC Microsoft Access-driver] Datatyperne stemmer ikke overens i kriterieudtrykket.
/stats/inc/day.asp, line 21

jeg fatter simpelthen ikk hvad der går galt ?