Does there exist a VBA command which does not change the formula of a cell, but its value? - vba

Question

Suppose in a worksheet the formula of R4 cell is =B1+B2, and its current value is 10.
A VBA command Range("R4").Value = 5 will change both its formula and its value to 5.
Does anyone know if there exists a VBA command which changes the value of R4 to 5, but does not change its formula, such that its formula is still =B1+B2?
PS: we can also achieve the same state in another way: 1) do a Range("R4").Value = 5 2) change the formula of R4 to =B1+B2 but without evaluating it. In this case, does there exist a VBA command which change the formula of a cell without evaluating it?
Edit: What I want to do is...
I would like to write a function, which takes a worksheet where some cells may be out of date (the formula does not match its value), and generates automatically a VBA Sub, this VBA Sub can reproduce this worksheet. The VBA Sub may look like:
Sub Initiate()
Cells(2,3).Value = 5
Cells(4,5).Value = 10
...
Cells(2,3).Formula = "=2+3"
Cells(4,5).Formula = "=C2+C2"
...
End Sub
Such that running Initiate() builds one worksheet with same values and formulas.
Without the VBA command I am asking, this Initiate() will be hard to generated.

Answer 1

You cannot change the value of a cell to something different than what the cell formula computes to.
Regarding your p.s.: You can probably change the formula of a cell without re-evaluation by changing the calculation mode to manual. But that would of course apply to the entire workbook, not just this one cell
EDIT: maybe a solution would be to temporarily save the formula of the cell in either a tag of that cell, or a hidden worksheet?

Answer 2

It is quite simple to change the result of a formula without changing the formula itself:
Change the value of of its argument(s). This is a Solver-type approach:
Sub ForceDesiredResult()
Dim r As Range
Set r = Range("B2")
With r
If r.HasFormula Then
.Formula = .Formula & "-5"
Else
.Value = .Value - 5
End If
End With
End Sub

Answer 3

Here is some very dirty code that will save all values of all formulas on the active sheet as custom properties of the sheet, and a 2nd sub that will mark red all cells where the value has changed from it's original value, while preserving all formulas. It will need some error-checking routines (property already exists, property doesn't exist,...) but should give you something to work with. Since I don't really understand your problem it's a bit hard to say ;)
Sub AddCustomProperty()
Dim mysheet As Worksheet
Dim mycell2 As Range
Dim myProperty As CustomProperty
Set mysheet = ActiveWorkbook.ActiveSheet
For Each objcell In mysheet.UsedRange.Cells
Debug.Print objcell.Address
If objcell.HasFormula Then Set myProperty = mysheet.CustomProperties.Add(objcell.Address, objcell.Value)
Next objcell
End Sub
Sub CompareTags()
Dim mysheet As Worksheet
Dim mycell2 As Range
Dim myProperty As CustomProperty
Set mysheet = ActiveWorkbook.ActiveSheet
For Each objcell In mysheet.UsedRange.Cells
Debug.Print objcell.Address
If objcell.HasFormula Then
On Error Resume Next
If mysheet.CustomProperties(objcell.Address).Value <> objcell.Value Then
objcell.Font.ColorIndex = 3
On Error GoTo 0
End If
End If
Next objcell
End Sub