Action to be carried out only once in VB

[marokay]

Hello,
I want the action Display in this code:

Private Sub Worksheet_Calculate()
If Range("I4").Value = "1" And Range("O9").Value = "PLACED" Then Range("O9").ClearContents
If Range("I4").Value = "1" And Range("O11").Value = "PLACED" Then Range("O11").ClearContents
End Sub

Take place only once!
In the case that the conditions are in place it will trigger the deletion of the Q9 or Q11 but if these conditions will come back again he does not erase the cells ...
Is it possible?

 

[bobsan42]

well you need a third condition then and it should be quite permanent.
option 1. reserve a cell somewhere (eventually hidden and locked) to fill in the remarks (as some value) that this has already been done.
option 2. instead of a cell you can create and use a "Custom document property"

 

[p45cal]

In the case that the conditions are in place it will trigger the deletion of the Q9 or Q11 but if these conditions will come back again he does not erase the cells ...

Do you want the two cells to be treated independently? SFor example, if only one of the cells is cleared, do you still want the other cell to be checked?

 

[marokay]

well you need a third condition then and it should be quite permanent.
option 1. reserve a cell somewhere (eventually hidden and locked) to fill in the remarks (as some value) that this has already been done.
option 2. instead of a cell you can create and use a "Custom document property"

How can I do the first option? (i am a bginer in VB)

 

[bobsan42]

Sheets("Sheet1").Range("A1").Value = "Already Done!"

....

If NOT Sheets("Sheet1").Range("A1").Value = "Already Done!" Then
            If Range("I4").Value = "1" And Range("O9").Value = "PLACED" Then Range("O9").ClearContents
            If Range("I4").Value = "1" And Range("O11").Value = "PLACED" Then Range("O11").ClearContents
End If

or

If Sheets("Sheet1").Range("A1").Value = "Already Done!" Then Exit Sub
If Range("I4").Value = "1" And Range("O9").Value = "PLACED" Then Range("O9").ClearContents
If Range("I4").Value = "1" And Range("O11").Value = "PLACED" Then Range("O11").ClearContents

 

[marokay]

I do not understand how the - "Already Done!" will come in automatically after the cell was deleted ?