Hi, I have an interesting question and is useful to my case.

When a file is open, if cell A1 has a text "Hello there", then I want to make this cell add a blank space as "Hello there ". Let's save this file and close. So now if I re-open it, I want cell A1 to remove the added blank space and revert to be "Hello there". This take turns to change back and forward.

Any idea with simple Excel function, or does this have to be done with VBA?