VBA trigger macro on cell value change

Question

This should be simple. When the value of a cell changes I want to trigger some VBA code. The cell (D3) is a calculation from two other cells =B3*C3. I have atte

Answer 1

Could you try something like this? Change the formula to =D3AlertOnChange(B3*C3).

Private D3OldVal As Variant

Public Function D3AlertOnChange(val)
    If val <> D3OldVal Then MsgBox "Value changed!"
    D3OldVal = val
    D3AlertOnChange = val
End Function