Need to rewrite protect code so that it will work with a hidden sheet.

I need this code below to work in a macro on a hidden sheet.. FYI the sheet name is "Closed".

Columns("A:CO").Select
    Selection.Locked = True
    Selection.FormulaHidden = False
    ActiveSheet.Protect DrawingObjects:=True, Contents:=True, Scenarios:=True

Maybe something like:?

sheets("Closed").columns("A:CO").Locked=True.FormulaHidden=False
Protect DrawingObjects:=True, Contents:=True, Scenarios:=True

Just a guess.

Thanks for the help!