vba code to copy data from one sheet to another (vb 7.0)

Hi everyone ,

i am a first time visitor to this forum, i created a worksheet where i enter data using a userform . i managed to overcome many hurdles until now . the issue i have is how to copy the validated to sheet1 to sheet2 and save it for later reports.
for example when i validate this data to the sheet1
register number cell b27
part number cell b28
quantity cell c28
i want this data to be copied automatically to sheet2 without activating the sheet .
basically i want at the end of the validation process to see all these data stored in sheet 2
i tried different code but i went through some difficulties, either certain lines don't work or i don't get the result i want . and this is one of the codes i tried
Dim lastrowDB As Long, lastrow As Long
Dim arr1, arr2, i As Integer

With Sheets("DB")
lastrowDB = .Cells(.Rows.Count, "A").End(xlUp).Row + 1
End With

arr1 = Array("A1", "A2", "A3", "A4", "B10", "B12")
arr2 = Array("A", "B", "C", "D", "E", "F")

For i = LBound(arr1) To UBound(arr1)
With Sheets("Data")
lastrow = Application.Max(3, .Cells(.Rows.Count, Left(arr1(i), 1)).End(xlUp).Row)
Sheets("DB").Range(arr2(i) & lastrowDB).Resize(lastrow - 2).Value = _
.Range(Cells(3, arr1(i)), .Cells(lastrow, arr1(i))).Value
End With
Next
Application.CutCopyMode = False

End Sub

i get the two bold lines highlighted in yellow

any help will be appreciated

thanks