Hide TTabSheet (Lazarus)

[T-Bear]

Hi, i have a TPagecontrol, with 5 TTabSheets. Now my problem is, that i want to show only some of these tabs at the same time. How can i hide a TTabSheet in lazarus?

I have tried it in these ways...
TTabsheet.visible:=False;
TTabsheet.Hide;

...but this doesn't seem to work...

Any ideas? Thanks! ;)

Edit:
Oh figured it out. I just set the TTabSheet.Tabvisible property to false.