what happened to the charts "SERIES" formulas in xl2010 ?

[lalbatros]

Hello,

I just realised that when selecting a series on a chart in xl2010,
the traditional "SERIES(...,...,...)" formula doesn't appear in the formula bar.

Is that a usual behaviour in xl2010?
Can that be modified?
How could I see these formulas again?

Thanks,

Michel

 

[lalbatros]

By "the formula bar is frozen" I meant that the formula was not visible and that the formula text box could not be entered.

Indeed, I am almost sure the file was created in XL2003.
I am using both versions, and I often switch from one to the other.
That might be the cause of this problem.