I have this
If Not IsNull(strCount = DLookup("[Number_Of_Records]", "All_Booked_Callbacks ", "[CallBack_Date] =#" & Me.CB_DAte.Value & "#" _
& " And [CallBack_Time] = #" & Me.CB_Time.Value & "#")) Then strCount = DLookup("[Number_Of_Records]", "All_Booked_Callbacks ", "[CallBack_Date]...