How populate 2nd field using 1st three charaters from 1st field

I have a form which contains two fields.  The 1st one is a textbox which the user uses to enter a zip code.  For example, they may enter 61107-1123.

The 2nd field is a text box also.  I want it to populate when the afterupdate event fires from the first field.

But the way it has to work is the 1st field has to do a lookup to a table of UPS zones (see attached file)

So if the user did enter 61107-1123, the lookup uses the first three characters or "611" to enter "005" into the 2nd field.  If you refer to the file I attached you will see how this works.  We want it to always default to the ground "number".

Note: all of the fields in the UPS Zones table are text now.  I assume they should be.

--Steve
UPS-Zone-Chart.xls
SteveL13Asked:
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Rey Obrero (Capricorn1)Connect With a Mentor Commented:
test this sample db
xZipCode.accdb
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omgangIT ManagerCommented:
I don't think the lookup table  should be all text fields.  You are wanting to do a math comparison, e.g. 611 is greater than 600 but less than 639.  I'd create two number columns in the table, ZipMin & ZipMax.  For the zip range in question ZipMin = 600 & ZipMax = 639

Now your AfterUpdate event could be something like

strZipFirst3 = Left("TheFirstFormField", 3)
intZipFirst3 = CInt(strZipFirst3)
varGround = DLookup("Ground", "tblZipCodes", "ZipMin = " & intZipFirst3 & " Or (ZipMin <= " & intZipFirst3 & " AND ZipMax >= " & intZipFirst3 & ")")

OM Gang
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omgangConnect With a Mentor IT ManagerCommented:
Tested and it does work.
OM Gang


Private Sub Text0_AfterUpdate()
On Error GoTo Err_Text0_AfterUpdate

    Dim intZipFirst3 As Integer
    Dim varGround As Variant
   
    intZipFirst3 = CInt(Left(Me.Text0, 3))
   
    varGround = DLookup("Ground", "tblZipCodes", "ZipMin = " & intZipFirst3 & " OR (ZipMin <= " & intZipFirst3 & " AND ZipMax >= " & intZipFirst3 & ")")
   
    Me.Text2 = Nz(varGround, "000")
   

Exit_Text0_AfterUpdate:
    Exit Sub
   
Err_Text0_AfterUpdate:
    MsgBox Err.Number & ", " & Err.Description, , "Error"
    Resume Exit_Text0_AfterUpdate
   
End Sub
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omgangIT ManagerCommented:
This is what I put in for sample data in tblZipCodes

ZipMin      ZipMax      Ground
594                599      008
600                639      005
640                649      006
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