Moving ListBox on a TabPanel

I have followed the example in documentation ( http://documentation.xojo.com/api/deprecated/pagepanel.html )

ListBox1.PanelIndex = 1

And… it’s not showing up?
I have tried the following code and still doesn’t show up?

' Function(s) / Logic...
lstBxOrders.Visible = True
lstBxOrders.PanelIndex = 3
pnlTill.SelectedPanelIndex = 3

' Function(s) / Logic...
pnlTill.SelectedPanelIndex = 3
lstBxOrders.Visible = True
lstBxOrders.PanelIndex = 3

I’m stumped…

Does your panel have 4 panels?

Yes

Can you share your project or a sample that reproduces the problem? Someone can take a look at it.

Edit: your title says TabPanel but you link to PagePanel, that’s why I think is better to show a sample.