I have a cell into which I would like to input a time value, either
negative or positive from which other cells will perform calculations.

When I enter the time as a positive value it works fine, however if I
attempt to put the value in as a negative, i get a popup that says "The
formula you typed contains an error. If you are not trying to enter a
formula avoid using the - sign."

If I format the cell as -h:mm, it has no problem processing the value
entered, however I cannot enter a positive value. This same error
occurs no matter how the cell is format, from General, to Number, to
Time, to Custom Time.

I have the 1904 date system enabled if that helps with the problem
solving.


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B. Baumgartner
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