If Nz(Me.KayitNu, "") = "" Then
xHrf = Format(Date, "dd.mm.yyyy") & "-Y-"
If Sec = 2 Then xHrf = Format(Date, "dd.mm.yyyy") & "-P-"
xNud = DMax("clng(0 & mid([KayitNu],14))", "Tbl_AracKayit", "[KayitNu] like '" & xHrf & "*'")
Me.KayitNu = xHrf & Format(Nz(xNud, 0) + 1, "0000")
End If
aşağıdaki kodu dener misiniz?