Get a value from Table, check if fields are -1

hello,

I want to build a SQL that will check the table based on a "permit #" then if within that it finds that 4 fields are -1 then deny using that permit#

OK, so on my form I have the field:  txtPermit

on the beforeupdate, or even the afterUpdate,  I want it to search the txtPermit field in a table:  tblHWWPass, pull 4 fields and check to see if those all have "-1" (they are checkboxes)

txtPermit:  1

my sql will be

("Permit", "tblHWWPass", me.txtPermit)

but I don't know how to see if
Tab1
Tab2
Tab3
Tab4

are all -1

?
Ernest GroggAsked:
Who is Participating?
 
Rey Obrero (Capricorn1)Commented:
use the dcount to check the presence of the record that satisfy the criteria in the beforeupdate event of the form

private sub form_beforeUpdate(cancel as integer)
' if Permit is Number Data type use this
if dcount("*","tblHWWPass", "[Permit]=" & me.txtPermit & " and [tab1]=-1 and [tab2]=-1 and [tab3]=-1 and [tab4]=-1") >0 then

' if Permit is Text Data type use this
'if dcount("*","tblHWWPass", "[Permit]='" & me.txtPermit & "' and [tab1]=-1 and [tab2]=-1 and [tab3]=-1 and [tab4]=-1") >0 then


 msgbox "record already exists"
 cancel=true

end if

end sub
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