Validation based on a Null condition problem

[kobamfo]

Hi Guys,
I have the following code which checks for non-Null fields prior to table update, so naturally, I have it on Before_Update of my form.

Dim strMessage As String
    Dim intOptions As Integer
    Dim strTitle As String
    Dim bytChoice As Byte

    If IsNull(destname) Then
        strMessage = "You have not entered a Destination for this Record." & _
        "Input a destination to continue" & vbCrLf & vbCrLf & _
        "Click ok to return to form."
        intOptions = vbOKOnly
        strTitle = "Missing Data..."
        bytChoice = MsgBox(strMessage, intOptions, strTitle)

        'If bytChoice = vbOKOnly Then
            'Set focus to the destname field            destname.SetFocus

'highlight empty field
          
Dim Green As Long
Green = RGB(229, 238, 124)
destname.BackStyle = 1
destname.BackColor = Green

            'Cancel saving the record
            Cancel = True
        'End If
    End If

Now I want this validation to work ONLY WHEN a field named "docref" Is Null and "destname" is also Null. If "docref" Is Not Null, then the validation should not pop-up and allow the form to save with "destname" being Null or zero length. (offcourse the backend table allows for zero lenght for the "destname" field. I hope my question is clear. :-|
Any ideas please.

[Rabbit]

Use the AND operator.

If expression1 AND expression2 Then
   Do Something
End If

[kobamfo]

Thanks Rabbit, I think I am catching up a day at a time :-).