I have a question about the using of Excel and VBA.

Let’s say in cell A1 and A2, I input 1 and 2. Then I input formula
“=SUM(A1+A2)” into cell A3.

I would like to write a VBA code to have the following functionality:

Once I change the formula in A3, let’s say I input 4 to cell A3, the
color of the cell A3 should be changed.
Once I double click the changed cell A3, it should recover to the
formula “=SUM(A1+A2)”.

Anybody could help me out to solve the problem?

Thank you


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jaccker
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