Trigger Sheet Change Target Macro?

Jun 19, 2013

If for example cell A1 begins empty with no data in it other than a formula and something occurs to change the state of cell A1 to a value which triggers a change in cell B1 (a variable), can I use this to fire a sheet change macro ????

Wish to trigger a macro on sheet change based on every cell in column C, is this even possible ???

Or, is a change in a variable (C1) for example, the same as that of a DIRECT user keyboard input for example ???

Code:

Private Sub Worksheet_Change(ByVal Target As Range) Dim c As Range
If Not Application.Intersect(Target, Columns(3)) Is Nothing Then
Application.EnableEvents = False
For Each c In Target

[Code]...

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I have an application that updates the text string in A1 every x minutes (time may vary). I'm trying to develop a toutine that will trigger a Macro/call a function/subroutine once only on each change of data (and then not trigger again until the next change...and must only trigger on change of data in this specific cell). So the timeline looks like this

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Code:
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[Code].....

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[Code]....

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